Geospatial data about Williamson County, Texas Municipal Utility Districts. Export to CAD, GIS, PDF, CSV and access via API.

A 24"x28" PDF map of special districts in Denton County, including fresh water supply districts, public improvement districts, and municipal utility districts.

Geospatial data about Brazoria County, Texas MUD Districts. Export to CAD, GIS, PDF, CSV and access via API.

East Bay Municipal Utility District with ward boundaries, within the extent of Alameda County; boundaries have been updated to show 2011-2012 redistricting changes. Boundaries represent voting districts (i.e., district designation for each address) and therefore may align with parcel boundaries in cases where parcels (and sometimes residences) are divided by the true city/district boundary.

Municipal Utility Districts (MUD) In the City of Pflugerville, TX. This data updates automatically when SDE is edited. If downloaded from Open Data, this data is the most current to the date of download.

This layer shows the various Municipal Utility Districts (MUD) within the City of Pearland.

This digital map database provides an areally continuous representation of the Quaternary surficial deposits of the San Francisco Bay region merged from the database files from Knudsen and others (2000) and Witter and others (2006). The more detailed mapping by Witter and others (2006) of the inner part of the region (compiled at a scale of 1:24,000), is given precedence over the less detailed mapping by Knudsen and others (2000) of the outer part of the area (compiled at a scale of 1:100,000). The Quaternary map database is accompanied by a list of the map-unit names represented by polygon identities, a digital map index of the 1:24,000-scale topographic quadrangles of the region, and a figure illustrating the contents of the database. The Quaternary map database includes line work and the identity of the Quaternary map units, but no further description of the map units or how they were mapped. Use of the database should thus be accompanied by consultation with the original reports, which describe the map units and mapping procedures: citation of this database should be accompanied by citation of those original reports. As with all such digital maps, use of this database should attend to the compilation scales involved and not try to extract spatial detail or accuracy beyond those limits. Database layers: SFBQuat-lns: Quaternary map database: unit boundaries and their attributes SFBQuat-pys: Quaternary map database: polygons and their attributes SFBIndex-lns: Boundaries of 7.5-minute quadrangles for the map area, distinguishing those that form boundaries of 15-minute and 30x60-minute quadrangles SFBIndex-pys: 7.5-minute quadrangles, and for those within map area, their names and the names of the 30x60-minute quadrangles that contain them. The liquefaction ratings presented in the original reports for the various Quaternary map units remain valid and can be assigned to the units in this database if desired, with ratings of Witter and others (2006) given precedence. Assembly of the Quaternary map database involved stripping out all the information from the source maps that dealt with liquefaction, a major component of the original reports, and adjusting line work at the common boundary between the two source maps to produce a nearly seamless spatial database. The common boundary between the two sources is retained. Mismatches remaining at that common boundary are of two types: (1) contrasts in the degree of subdivision of the deposits resulting from the different compilation scales, and (2) terminations of narrow bands of water and artificial fill and levees at quadrangle boundaries that resulted from differences in details shown on the 1:24,000-scale topographic maps used as a source of mapping information in the original reports. The illustrative figure accompanying the database shows the content of the database plotted at a scale of 1:275,000, with the different map units distinguished by color and the different types of lines distinguished by symbol and color. An index map in that figure shows the 165 7½-minute quadrangles covering the region and the areas of the two source maps. Knudsen, K.L., Sowers, J.M., Witter, R.C., Wentworth, C.M., Helley, E.J., Nicholson, R.S., Wright, H.M., and Brown, K.M., 2000, Preliminary maps of Quaternary deposits and liquefaction susceptibility, nine-county San Francisco Bay region, California: a digital database: U.S. Geological Survey Open File Report 00-444. http://pubs.usgs.gov/of/2000/of00-444/ Witter, R.C., Knudsen, K.L, Sowers, J.M., Wentworth, C.M., Koehler, R.D., Randolph, C. E., Brooks, S.K., and Gans, K.D., 2006, Maps of Quaternary Deposits and Liquefaction Susceptibility in the Central San Francisco Bay Region, California: U.S. Geological Survey Open-File Report 06-1037 (http://pubs.usgs.gov/of/2006/1037)

description: "West Mojave Route Network Project Travel Management Area 5 - Map 12 of 20 (Shows Route Designations Decisions for Alternatives 1, 2, 3 and 4, Planning Area Boundary, Travel Management Area Boundary, Subregion Boundaries, Field Office Boundaries, Surface Management Agencies, Land Ownership, Route Designations, Areas of Critical Environmental Concern, Sensitive Resource Receptors, Restricted Areas, Wilderness Study Areas, Off-highway Vehicle Open Areas, National Monument Boundaries, Special Recreation Management Areas, Desert Linkage Network, Soil Erosion, Air Quality Management Districts, California Air Basins, and Unusual Plant Assemblages) n n n1. Travel Management Area 5 - Map 12 of 20 n2. WEMO Map Index Figure (Locator Map) n3. Map and Resource Data n n a. Labels ni. Route Designation n Motorized n Non-BLM n Non-Mechanized n Non-Motorized n Transportation Linear Disturbance n Route with Subdesignation n WEMO Planning Area n WEMO Travel Management Area n WEMO Subregion n BLM Field Office Boundary nii. Land Ownership n Bureau of Land Management n Forest Service n National Park Service n Fish and Wildlife Service n Bureau of Reclamation n Bureau of Indian Affairs n Department of Defense n Other Federal n State n Local Government n Private n iii. Resource Data n Area within 1/4 mile of a sensitive receptor n Area within 1 mile of a sensitive receptor n Residential Area n Area of Critical Environmental Concern n National Conservation Lands n Special Recreation Management Area n Desert Linkage Network n Area Prone to Erosion Due to Slopes Greater than 10 Percent niv. Air Quality Management Districts n Mojave Desert n v. California Air Basins n Mojave Desert n vi. Unusual Plant Assemblage n None n n b. Base Data n i. City or Town (Data Source: USGS Geographic Names Inventory System) nii. Major Roads (Data Source: US Census TIGER/Line) n iii. County Boundary (Data Source: ESRI) niv. BLM Field Office Boundary (Data Source: BLM State Office) n n c. WEMO Planning Boundaries n i. WEMO Planning Area (Data Source: BLM State Office) n ii. Travel Management Area 5 (Data Source: BLM Barstow Field Office) n iii. Subregions -(Data Source: BLM Barstow Field Office) n n d. Project Alternatives n i. Alternative 1 - No Action (Data Source: BLM Barstow Field Office) n ii. Alternative 2 Conservation (Data Source: BLM Barstow Field Office) n iii. Alternative 3 Increased Access (Data Source: BLM Barstow Field Office) n iv. Alternative 4 - Preferred (Data Source: BLM Barstow Field Office) n n e. Non-BLM Routes or routes not under BLM jurisdiction (Data Source: BLM State Office) n n f. Resource Descriptions and Data Sources n n i. Residential Area are areas near residences (Data Source: BLM State Office) n ii. Wilderness Areas are areas that include federally designated wildernesses (Data Source: BLM State Office) n iii. Area of Critical Environmental Concern are federally protected areas with special natural resources (Data Source: BLM State Office) n iv. National Monuments are federally designated through Presidential Proclamation (Data Source: BLM State Office) n v. National Conservation Lands are lands that the Bureau of Land Management for conservation purposes federally designates these (Data Source: BLM State Office) n vi. Areas Prone to Erosion are areas that are likely to experience erosion (Data Source: BLM State Office) n vii. Air Quality Management Districts are federally designated air quality districts with boundaries (Data Source: CA Air Resource Board) n viii. California Air Basins are designated by California with boundaries (Data Source: CA Air Resource Board) n"; abstract: "West Mojave Route Network Project Travel Management Area 5 - Map 12 of 20 (Shows Route Designations Decisions for Alternatives 1, 2, 3 and 4, Planning Area Boundary, Travel Management Area Boundary, Subregion Boundaries, Field Office Boundaries, Surface Management Agencies, Land Ownership, Route Designations, Areas of Critical Environmental Concern, Sensitive Resource Receptors, Restricted Areas, Wilderness Study Areas, Off-highway Vehicle Open Areas, National Monument Boundaries, Special Recreation Management Areas, Desert Linkage Network, Soil Erosion, Air Quality Management Districts, California Air Basins, and Unusual Plant Assemblages) n n n1. Travel Management Area 5 - Map 12 of 20 n2. WEMO Map Index Figure (Locator Map) n3. Map and Resource Data n n a. Labels ni. Route Designation n Motorized n Non-BLM n Non-Mechanized n Non-Motorized n Transportation Linear Disturbance n Route with Subdesignation n WEMO Planning Area n WEMO Travel Management Area n WEMO Subregion n BLM Field Office Boundary nii. Land Ownership n Bureau of Land Management n Forest Service n National Park Service n Fish and Wildlife Service n Bureau of Reclamation n Bureau of Indian Affairs n Department of Defense n Other Federal n State n Local Government n Private n iii. Resource Data n Area within 1/4 mile of a sensitive receptor n Area within 1 mile of a sensitive receptor n Residential Area n Area of Critical Environmental Concern n National Conservation Lands n Special Recreation Management Area n Desert Linkage Network n Area Prone to Erosion Due to Slopes Greater than 10 Percent niv. Air Quality Management Districts n Mojave Desert n v. California Air Basins n Mojave Desert n vi. Unusual Plant Assemblage n None n n b. Base Data n i. City or Town (Data Source: USGS Geographic Names Inventory System) nii. Major Roads (Data Source: US Census TIGER/Line) n iii. County Boundary (Data Source: ESRI) niv. BLM Field Office Boundary (Data Source: BLM State Office) n n c. WEMO Planning Boundaries n i. WEMO Planning Area (Data Source: BLM State Office) n ii. Travel Management Area 5 (Data Source: BLM Barstow Field Office) n iii. Subregions -(Data Source: BLM Barstow Field Office) n n d. Project Alternatives n i. Alternative 1 - No Action (Data Source: BLM Barstow Field Office) n ii. Alternative 2 Conservation (Data Source: BLM Barstow Field Office) n iii. Alternative 3 Increased Access (Data Source: BLM Barstow Field Office) n iv. Alternative 4 - Preferred (Data Source: BLM Barstow Field Office) n n e. Non-BLM Routes or routes not under BLM jurisdiction (Data Source: BLM State Office) n n f. Resource Descriptions and Data Sources n n i. Residential Area are areas near residences (Data Source: BLM State Office) n ii. Wilderness Areas are areas that include federally designated wildernesses (Data Source: BLM State Office) n iii. Area of Critical Environmental Concern are federally protected areas with special natural resources (Data Source: BLM State Office) n iv. National Monuments are federally designated through Presidential Proclamation (Data Source: BLM State Office) n v. National Conservation Lands are lands that the Bureau of Land Management for conservation purposes federally designates these (Data Source: BLM State Office) n vi. Areas Prone to Erosion are areas that are likely to experience erosion (Data Source: BLM State Office) n vii. Air Quality Management Districts are federally designated air quality districts with boundaries (Data Source: CA Air Resource Board) n viii. California Air Basins are designated by California with boundaries (Data Source: CA Air Resource Board) n"

The Woodlands land and property features web map including commercial & residential properties, area & boundary, open space reserves (OSR's), streets, neighborhoods & subdivision plats, MUD's (Municipal Utility Districts), RUD (Right-of-Way Utility District), associations, villages, county commissioner precincts, GreenUp (Earth Day) sites & routes, parks, aquatic pools, trails & trail features, lakes & ponds, and branches, creeks & streams.Users may explore the map using 'Search' box tool to find a property by address or business by name, and toggle on additional layers from layers list to display, interact with and query even more feature data on the map.

This data set includes topography and backscatter intensity of the sea floor of the Hudson Shelf Valley, located offshore of New York and New Jersey. The data were collected with a multibeam sea floor mapping system on surveys conducted November 23 - December 3, 1996, October 26 - November 11, 1998, and April 6 - 30, 2000. The surveys were conducted using a Simrad EM 1000 multibeam echo sounder mounted aboard the Canadian Hydrographic Service vessel Frederick G. Creed. This multibeam system utilizes 60 electronically aimed receive beams spaced at intervals of 2.5 degrees that insonify a strip of sea floor up to 7.5 times the water depth (swath width of 100 to 200 m within the survey area). Maps derived from the mulitbeam observations show sea floor topography, shaded relief, and backscatter intensity (a measure of sea floor texture and roughness). The data are gridded at 12 m/pixel. THIS DATA SET IS PRELIMINARY; PUBLICATION OF A FINAL DATA SET IS PLANNED IN 2003

The Woodlands land and property features interactive GIS web map app including open space, commercial & residential properties, area & boundary, streets, MUD's (Municipal Utility Districts), RUD (Right-of-Way Utility District), associations, neighborhoods, villages, county commissioner precincts, TWFD fire stations, parks, aquatic pools, trails & trail features, lakes & ponds, and branches, creeks & streams feature data layers.Users can explore the map and features using different functions and tools such as 'Near Me Buffer' to find and list properties or businesses within a specified search distance from a location, and 'Directions' to find driving or walking distance and time from one location to another including display of current traffic flows along thoroughfares (with 'Show traffic' option enabled).Turn on additional layers from layers list to display, interact with and query more feature data layers on the map.

description: Debris flows, debris avalanches, mud flows and lahars are fast-moving landslides that occur in a wide variety of environments throughout the world. They are particularly dangerous to life and property because they move quickly, destroy objects in their paths, and can strike with little warning. The purpose of this map is to show where debris flows have occurred in the conterminous United States and where these slope movements might be expected in the future.; abstract: Debris flows, debris avalanches, mud flows and lahars are fast-moving landslides that occur in a wide variety of environments throughout the world. They are particularly dangerous to life and property because they move quickly, destroy objects in their paths, and can strike with little warning. The purpose of this map is to show where debris flows have occurred in the conterminous United States and where these slope movements might be expected in the future.

At this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour …Show full descriptionAt this scale 1cm on the map represents 1km on the ground. Each map covers a minimum area of 0.5 degrees longitude by 0.5 degrees latitude or about 54 kilometres by 54 kilometres. The contour interval is 20 metres. Many maps are supplemented by hill shading. These maps contain natural and constructed features including road and rail infrastructure, vegetation, hydrography, contours, localities and some administrative boundaries. Product Specifications Coverage: Australia is covered by more than 3000 x 1:100 000 scale maps, of which 1600 have been published as printed maps. Unpublished maps are available as compilations. Currency: Ranges from 1961 to 2009. Average 1997. Coordinates: Geographical and either AMG or MGA coordinates. Datum: AGD66, GDA94; AHD Projection: Universal Transverse Mercator UTM. Medium: Printed maps: Paper, flat and folded copies. Compilations: Paper or film, flat copies only.

The U.S. Geological Survey, in cooperation with the National Park Service, Yellowstone Center for Resources, as part of work for the Yellowstone Volcano Observatory, has compiled a shapefile map of thermal areas and thermal water bodies in Yellowstone National Park. A thermal area is a continuous, or nearly continuous, geologic unit that contains one or more thermal features (e.g., hot springs, mud pots, or fumaroles); hydrothermally altered rocks and/or hydrothermal mineral deposits; heated ground and/or geothermal gas emissions; and is generally barren of vegetation or has stressed / dying vegetation. There are more than 10,000 thermal features in Yellowstone, most of which are clustered together into about 120 distinct thermal areas (e.g., Upper Geyser Basin, Crater Hills Thermal Area, or Roadside Springs). A thermal water body is a body of water, usually a lake, pond, or wetland area, that is thermally emissive because it receives heated water from a nearby thermal area, nearshore thermal springs, or from underwater vents. The shapefile released here is based on a thermal area polygon shapefile that was initially provided by the Spatial Analysis Center at the Yellowstone Center for Resources in Yellowstone National Park. The thermal area polygons were initially based on field mapping (by R. Hutchinson and others, unpublished data, 1997) and digitizing boundaries over high-spatial-resolution (1 m/pixel) visible color orthophotos from the National Agriculture Imagery Program (NAIP) acquired in 2006. Updates to this map are based on more recent field mapping and remote sensing data analysis, including nighttime thermal infrared data (e.g., ASTER and Landsat 8/9), high-spatial-resolution visible data from commercial satellites (e.g., WorldView-3), and NAIP imagery from 2015, 2017, 2019, and 2022. The downloadable shapefile contains a map of these thermal areas and thermal water bodies with information (if available) about their chemistry and thermal activity. The names of the thermal areas are either derived from the USGS Geographic Names Information System (GNIS) or are locally used names, as indicated in the attribute table. Thermal area mapping in Yellowstone is a work in progress, partly because there are still remote areas that have not yet been explored in detail, and partly because changes occur frequently. Thermal areas expand and contract, develop and decay, and migrate – over time scales that range from weeks to years. Thus, this map will be periodically assessed and updated. A note about safety: Thermal areas can be dangerous, with scalding water, mud, or gases that are sometimes hidden beneath unstable ground. Unstable ground sometimes looks solid, but stepping onto unstable ground can result in breaking through a thin crust and being exposed to scalding water, mud, or gases, which can cause severe burns. Since the establishment of the National Park, more than 20 people have died from burns suffered after they entered or fell into a hot spring. For the safety of park visitors and the protection of delicate thermal formations, it is prohibited to enter a thermal area in the back country, and one must stay on the trails or boardwalks when entering front country thermal areas (unless working in a thermal area on an official permit).

description: 2011 Vegetation Classification for Mud Lake, MN/SD Vegetation Project Report, OMBIL Environmental Stewardship - Level 1 Inventory. Mud Lake, located on the Minnesota and South Dakota border near the headwaters of the Red River in Traverse County, is an important breeding and migration staging area for waterfowl. Mud Lake is approximately 2,500 acres in area with a maximum depth of 7 feet. Due to the shallow depths, little fishing occurs on the Lake during the summer. Most fishing occurs from shore or during the winter. The most common species of fish in Mud Lake are Northern pike and Walleye. Land use in the surrounding watershed has historically been dominated by pasture/agricultural. Mud Lake is the north pool of the Lake Traverse Flood Control Project on the Boix de Sioux River. Land use changes in the watershed and reservoir water level management practices have reduced the value of Mud Lake as a waterfowl habitat. Water level stabilization has resulted in a decrease of aquatic macrophyte growth (both submerged and emergent) and a reduction in the invertebrate communities present in the Lake. The Lake Traverse Flood Control Project has developed plans to restore Mud Lake in order to create better fish spawning and waterfowl breeding habitats as well as other aquatic enhancement/restoration activities. The primary objective of the project is to map and describe the existing (currently on the ground) plant communities and to create a spatially referenced vegetation database for use in geographic information systems (GIS). The project provides an inventory of vegetation communities at Mud Lake with descriptive botanical and ecological information. The scope of work includes the mapping of vegetation types to the lowest hierarchical level of the National Vegetation Classification Standard (NVCS), a field survey to verify imagery signatures as they relate to the NVCS with map classification, mapping of all terrestrial and aquatic vegetation within the boundary of the Government provided project area, and developing an ArcGIS Geodatabase with spatial vegetation.; abstract: 2011 Vegetation Classification for Mud Lake, MN/SD Vegetation Project Report, OMBIL Environmental Stewardship - Level 1 Inventory. Mud Lake, located on the Minnesota and South Dakota border near the headwaters of the Red River in Traverse County, is an important breeding and migration staging area for waterfowl. Mud Lake is approximately 2,500 acres in area with a maximum depth of 7 feet. Due to the shallow depths, little fishing occurs on the Lake during the summer. Most fishing occurs from shore or during the winter. The most common species of fish in Mud Lake are Northern pike and Walleye. Land use in the surrounding watershed has historically been dominated by pasture/agricultural. Mud Lake is the north pool of the Lake Traverse Flood Control Project on the Boix de Sioux River. Land use changes in the watershed and reservoir water level management practices have reduced the value of Mud Lake as a waterfowl habitat. Water level stabilization has resulted in a decrease of aquatic macrophyte growth (both submerged and emergent) and a reduction in the invertebrate communities present in the Lake. The Lake Traverse Flood Control Project has developed plans to restore Mud Lake in order to create better fish spawning and waterfowl breeding habitats as well as other aquatic enhancement/restoration activities. The primary objective of the project is to map and describe the existing (currently on the ground) plant communities and to create a spatially referenced vegetation database for use in geographic information systems (GIS). The project provides an inventory of vegetation communities at Mud Lake with descriptive botanical and ecological information. The scope of work includes the mapping of vegetation types to the lowest hierarchical level of the National Vegetation Classification Standard (NVCS), a field survey to verify imagery signatures as they relate to the NVCS with map classification, mapping of all terrestrial and aquatic vegetation within the boundary of the Government provided project area, and developing an ArcGIS Geodatabase with spatial vegetation.

This part of DS 781 presents data for the geologic and geomorphic map of Monterey Canyon and Vicinity, California. The vector data file is included in "Geology_MontereyCanyon.zip," which is accessible from http://dx.doi.org/10.5066/F7XD0ZQ4. The offshore part of the Monterey Canyon and Vicinity map area contains two geomorphic regionsâ (1) the continental shelf, and (2) Monterey Canyon and its tributaries (the Monterey Canyon "system"), including Soquel Canyon. The continental shelf in the Monterey Canyon and Vicinity map area is relatively flat and characterized by a variably thick (and locally absent) cover of uppermost Pleistocene and Holocene sediment that overlies Neogene bedrock and Pleistocene paleo-channel and canyon fill (unit Qcf). Inner-shelf and nearshore deposits are mostly sand (unit Qms), and are thickest (as much as 32 m) in a shore-parallel bar offshore that extends to the mouth of the Salinas River (sheet 9). Slope failures off of the west flank of this delta-mouth bar have resulted in three west-trending elongate sandy lobes (unit Qmsl); individual lobes are as much as 3,000-m long and 800-m wide, have as much as 150 cm of relief above the surrounding smooth seafloor, and are commonly transitional to upslope chutes. Unit Qmsf lies offshore of unit Qms in the mid shelf, consists primarily of mud and muddy sand, and is commonly extensively bioturbated. Sediment cover typically thins in the offshore direction and toward Monterey Canyon (sheet 9); Pleistocene paleo-channel and canyon fill (unit Qcf) and the upper Miocene and Pliocene Purisima Formation (unit Tp; Powell and others, 2007) are exposed on the outer shelf and along the rims of the modern Monterey Canyon system. Both the Purisima Formation (Tp) and Pleistocene paleo-channel and canyon fill (Qcf) are in places overlain by a thin (less than 1 m?) veneer of sediment recognized on the basis of high backscatter, flat relief, continuity with moderate- to higher-relief outcrops, and (in some cases) high-resolution seismic-reflection data; these areas, which are mapped as composite units Qms/Tp or Qms/Qcf, are interpreted as ephemeral sediment layers that may or may not be continuously present, depending on storms, seasonal and (or) annual patterns of sediment movement, or longer term climate cycles. Sea level has risen about 125 to 130 meters over about the last 21,000 years (for example, Stanford and others, 2011), leading to broadening of the continental shelf, progressive eastward migration of the shoreline, and associated transgressive erosion and deposition. Sea-level rise was apparently not steady, leading to development of pairs of shoreline angles and adjacent submerged wave-cut platforms (Kern, 1977) during pulses of relative stability. Latest Pleistocene paleoshorelines are best preserved along the flanks of Soquel Canyon, where three sets of wave cut platforms (units Qwp1, Qwp2, Qwp3) and paired risers (units Qwpr1, Qwpr2, Qwpr3) are bounded by shoreline angles at water depths of about 120 to 125 meters, about 108 meters, and about 96 to 100 meters. Within the Monterey Canyon system, geologic and geomorphic units are delineated and characterized on the basis of multibeam bathymetry (sheet 1), backscatter (sheet 3), published samples and descriptions of geology within the canyon system (e.g., Greene, 1977; Barry and others, 1996; Stakes and others, 1999; Wagner and others, 2002; Paull and others, 2005a, 2005b, 2010), and, where available, seismic-reflection profiles (sheet 8) and video observations (sheet 6). Major geologic and geomorphic components within the canyons include the canyon-head region, canyon axial channels, canyon walls, and canyon benches and platforms. The canyon-head region of Monterey Canyon includes sandy channel fill (unit Qchc; Paull and others, 2005a) and inter-channel sediment-draped ridges (unit Qchr) inferred to have formed largely by erosion of the canyon head into older canyon and (or) channel fill. There is a geomorphic gradational transition down-canyon from canyon-head channel fill (unit Qchc) to proximal active axial channel fill (unit Qcpcf), and both channel-fill units include dynamic crescent-shaped sandy bedforms (Paull and others, 2005a, 2010; Smith and others, 2005; Xu and others, 2008). Beyond the canyon head region, the axial channel of Monterey Canyon forms a sinuous ribbon of coarse-grained deposits (unit Qccf3), sloping about 3.5° to the western edge of the map area (Paull and others, 2005a, 2010; Greene and others, 2002; Xu and others, 2008). Xu and others (2002, 2008, 2013) and Paull and others (2010) have documented recent sediment-gravity flows down the Monterey Canyon axial channel, indicating that it is an active conduit of sediment transport. Map units adjacent to the axial channel include canyon walls, benches, and landslides. Canyon walls (unit Qmscw) that are relatively smooth are generally covered by muddy Quaternary sediments (Paull and others, 2005a, 2010), whereas steeper and rougher segments of canyon walls commonly contain exposures of bedrock or incised Pleistocene paleo-channel and canyon fill (unit Qcfcw). Purisima Formation outcrops occur in the upper canyon walls (unit Tpcw). Older, underlying bedrock units (Greene, 1977; Barry and others, 1996; Stakes and others, 1999; Wagner and others, 2002) are exposed at greater depths along canyon walls. These older units include the Miocene Monterey Formation (unit Tmcw), Miocene and Oligocene sandstone (unit Tscw), Tertiary volcanics intrusive into sedimentary bedrock and Cretaceous granodiorite (unit Tvcw), and Cretaceous granodiorite (unit Kgcw). Exposures of these bedrock units and incised Pleistocene paleo-channel and canyon fill outcrops in the canyon walls (unit Qcfcw) are inferred to result from a combination of erosion by dense sediment flows down the axial channel and continuing landslide failure of the canyon walls. Relatively flat areas immediately adjacent to the axial channel or within the canyon walls are mapped as inner benches (unit Qcb2) and outer benches (unit Qcb1), respectively (bench term from Paull and others, 2010 and Maier and others, 2012). Benches generally have lower slopes than surrounding canyon walls and accumulate fine-grained sediments, including muddy marine, hemipelagic, turbidite, and landslide deposits (Paull and others, 2005a, 2010). Relatively flat, smooth, sediment-covered platforms on the crests of bathymetric divides between canyon meanders are mapped as canyon platforms (unit Qmscp). Regions of the canyon walls characterized by steep, scallop-shaped scarps and paired hummocky mounds are mapped as landslides (units Qlsm). Multiple generations of landslides are mapped (units Qlsm1, Qlsm2, Qlsm3) where failure of older landslides yielded younger landslides. Paull and others (2005b) noted that landslide scarps are commonly associated with chemosynthetic biologic communities. Landslide blocks in the Monterey Canyon system (Qlsmb) are distinguished by positive relief and deflection of an axial channel. Landslide blocks are inferred to be bedrock, similar to bedrock found in adjacent canyon walls. One block in the distal portion of the Monterey Canyon system in the map area (Qlsmb1) has been previously studied, identified as composed of Cretaceous granodiorite, and informally named the â Navy Slumpâ (Greene and others, 2002; Paull et al., 2005a). Soquel Canyon is the most prominent of five mapped tributaries to Monterey Canyon. During the sea-level lowstand about 21,000 years ago, Soquel Creek fed directly into Soquel Canyon, carrying coarse-grained sediment directly to the Monterey Canyon system (see sheet 9). Sea-level rise isolated Soquel Canyon from its paired coastal watershed, and this "abandoned" tributary canyon is now being filled largely with Holocene hemipelagic sediment. The Soquel Canyon axial channel is divided into two sections based on lithology of the fill deposits. The abandoned submarine canyon axial channel fill (unit Qccf2) in upper Soquel canyon consists of fine-grained sediment. In lower Soquel Canyon adjacent to Monterey Canyon, the abandoned submarine canyon axial channel fill (unit Qccf1) contains gravel, sand, and mud (Stakes and others, 1999) that is possibly derived from Holocene and Pleistocene landslides, and may also contain bedrock exposures. Two other abandoned canyon tributaries (unit Qctf1) were likely connected to the Pajaro River during the sea-level lowstand. These two tributaries are mapped east of Soquel Canyon on the north flank of Monterey Canyon. One abandoned tributary (unit Qctf2) is mapped on the south flank of Monterey Canyon and appears to have been connected to the Salinas River during the sea-level lowstand. The shelf north and south of Monterey Canyon in the Monterey Canyon and Vicinity map area is cut by a diffuse zone of northwest striking, steeply dipping to vertical faults comprising the Monterey Bay Fault Zone (MBFZ). This zone, originally mapped by Greene (1977, 1990), extends about 45 km across outer Monterey Bay (Map E on sheet 9). Fault strands within the MBFZ are mapped with high-resolution seismic-reflection profiles (sheet 8). Seismic-reflection profiles traversing this diffuse zone cross as many as 9 faults over a width of about 8 km (see, for example, fig. 7 on sheet 8). The zone lacks a continuous "master fault," along which deformation is concentrated. Fault length ranges up to about 20 km (based on mapping outside this map area), but most strands are only about 2- to 7-km long. Faults in this diffuse zone cut through Neogene bedrock and locally appear to minimally disrupt overlying inferred Quaternary sediments. The presence of warped reflections along some fault strands suggests that fault offsets may be both vertical and strike-slip. Mapping fault strands in the MBFZ across the Monterey Canyon system is problematic. The combination of steep relief, increased water depths, and massive to poorly-stratified

The purpose of this project is to map the surficial geology of the sea floor of Historic Area Remediation Site (HARS) and changes in surficial characteristics over time. This GIS project presents multibeam and other data in a digital format for analysis and display by scientists, policy makers, managers and the general public.

This project presents maps of the sea floor in GIS format of the Historic Area Remedition Site (HARS), located offshore of New York and New Jersey. The data were collected with a multibeam sea floor mapping system on surveys conducted November 23 - December 3, 1996, October 26 - November 11, 1998, and April 6 - 30, 2000. The maps show sea floor topography, shaded relief, and backscatter intensity (a measure of sea floor texture and roughness) at a spatial resolution of 3 m/pixel, and locations of dredged material placed on the sea floor. The sea floor of the HARS, approximately 9 square nautical miles in area, is being remediated by placing at least a one-meter of clean dredged material on top of the existing surface sediments that exhibit varying degrees degradation resulting from previous disposal of dredged and other material. Comparison of the topography and backscatter intensity from the three surveys show changes in topography and surficial sediment properties resulting from placement of dredged material in 1996 and 1997 prior to designation of the HARS, as well as placement of material for remediation of the HARS. This study is carried out cooperatively by the U.S. Geological Survey and the U.S. Army Corps of Engineers.

description: This geologic map database for the El Mirage Lake area describes geologic materials for the dry lake, parts of the adjacent Shadow Mountains and Adobe Mountain, and much of the piedmont extending south from the lake upward toward the San Gabriel Mountains. This area lies within the western Mojave Desert of San Bernardino and Los Angeles Counties, southern California. The area is traversed by a few paved highways that service the community of El Mirage, and by numerous dirt roads that lead to outlying properties. An off-highway vehicle area established by the Bureau of Land Management encompasses the dry lake and much of the land north and east of the lake. The physiography of the area consists of the dry lake, flanking mud and sand flats and alluvial piedmonts, and a few sharp craggy mountains. This digital geologic map database, intended for use at 1:24,000- scale, describes and portrays the rock units and surficial deposits of the El Mirage Lake area. It was prepared as part of a water-resource assessments of the area, describing and interpreting surface geology that provides information to help understand distribution and extent of deeper groundwater-bearing units. The area mapped covers the Shadow Mountains SE and parts of the Shadow Mountains, Adobe Mountain, and El Mirage 7.5-minute quadrangles. The map database includes detailed geology of surface and bedrock deposits, which represent a significant update from previous bedrock geologic maps by Dibblee (1960) and Troxel and Gunderson (1970), and the surficial geologic map of Ponti and Burke (1980); it incorporates a fringe of the detailed bedrock mapping in the Shadow Mountains by Martin (1992).; abstract: This geologic map database for the El Mirage Lake area describes geologic materials for the dry lake, parts of the adjacent Shadow Mountains and Adobe Mountain, and much of the piedmont extending south from the lake upward toward the San Gabriel Mountains. This area lies within the western Mojave Desert of San Bernardino and Los Angeles Counties, southern California. The area is traversed by a few paved highways that service the community of El Mirage, and by numerous dirt roads that lead to outlying properties. An off-highway vehicle area established by the Bureau of Land Management encompasses the dry lake and much of the land north and east of the lake. The physiography of the area consists of the dry lake, flanking mud and sand flats and alluvial piedmonts, and a few sharp craggy mountains. This digital geologic map database, intended for use at 1:24,000- scale, describes and portrays the rock units and surficial deposits of the El Mirage Lake area. It was prepared as part of a water-resource assessments of the area, describing and interpreting surface geology that provides information to help understand distribution and extent of deeper groundwater-bearing units. The area mapped covers the Shadow Mountains SE and parts of the Shadow Mountains, Adobe Mountain, and El Mirage 7.5-minute quadrangles. The map database includes detailed geology of surface and bedrock deposits, which represent a significant update from previous bedrock geologic maps by Dibblee (1960) and Troxel and Gunderson (1970), and the surficial geologic map of Ponti and Burke (1980); it incorporates a fringe of the detailed bedrock mapping in the Shadow Mountains by Martin (1992).

Mapping and classifying the seabed of the West Greenland continental shelf. Marine benthic habitats support a diversity of marine organisms that are both economically and intrinsically valuable. Our knowledge of the distribution of these habitats is largely incomplete, particularly in deeper water and at higher latitudes. The western continental shelf of Greenland is one example of a deep (more than 500 m) Arctic region with limited information available. This study uses an adaptation of the EUNIS seabed classification scheme to document benthic habitats in the region of the West Greenland shrimp trawl fishery from 60┬░N to 72┬░N in depths of 61ÔÇô725 m. More than 2000 images collected at 224 stations between 2011 and 2015 were grouped into 7 habitat classes. A classification model was developed using environmental proxies to make habitat predictions for the entire western shelf (200ÔÇô700 m below 72┬░N). The spatial distribution of habitats correlates with temperature and latitude. Muddy sediments appear in northern and colder areas whereas sandy and rocky areas dominate in the south. Southern regions are also warmer and have stronger currents. The Mud habitat is the most widespread, covering around a third of the study area. There is a general pattern that deep channels and basins are dominated by muddy sediments, many of which are fed by glacial sedimentation and outlets from fjords, while shallow banks and shelf have a mix of more complex habitats. This first habitat classification map of the West Greenland shelf will be a useful tool for researchers, management and conservationists.

Connecticut Historic Shoreline Wetlands:

1880s NOS T-Sheet Shoreline Features is a 1:10,000-scale, line feature-based layer that includes information depicting historic shoreline features and wetland boundaries for areas of coastal Connecticut during the 1880s. The layer depicts information found on topographic survey sheets (T-sheets) from the US Coast and Geodetic Survey (USC&GS), a predecessor to the National Ocean Service (NOS). The layer represents conditions at a particular point in time. The layer does not depict current conditions. The layer includes ground condition features such as approximate shoreline, shoreline, wetland shoreline, wetland upland boundaries, wetland interior boundaries, man-made shoreline, jetties/breakwaters/groins, and piers/ramps/docks. Semi-submerged marshes, referred to here as "low marshes," ocurring where it is possible to discern marsh-like features waterward of the shoreline are also included. Off shore and riverine islands and rocks may be included depending on the quality of their depiction on the t-sheet. It does not include any non shoreline-centric elements that may have been depicted on the t-sheets such as buildings, roads, bridges, etc., nor does it include other off-shore features like sandbars, mud flats, tidal flats, etc. Features are line locations that represent the approximate location of shoreline features and wetland boundaries. Shoreline, as depicted on the T-sheets that pre-date 1927, reference an approximation of Mean High Water (MHW). Although MHW is technically determined by averaging the height of the high water line, (HWL) the landward extent of the last high tide over a 19 year lunar cycle, USC&GS topographers appoximated MHW by familarizing themselves with the tidal conditions in a given area and noting the assorted physical characteristics of the beach. (For a more complete description of this and other shoreline indicators, the reader is directed to the following article: "Historical Shoreline Change: Error Analysis and Mapping Accuracy," Crowell, M., Leatherman, S., and Buckley, M. Journal of Coastal Research, Vol 7, No. 3, 1991, pp 839-852.) Attribute information is comprised of codes to identify individual features, encode shoreline feature type information, and cartographically represent (symbolize) shoreline features on a map. These codes were derived in part from the National Oceanic & Atmospheric Administration (NOAA) Coastal Services Center (CSC) Historic Digital Shoreline Capture project and modified by the State of Connecticut Department of Environmental Protection to address the inclusion of wetland areas. This data was compiled at 1:10,000 scale. This data is not updated. Purpose: 1880s NOS T-Sheet Shoreline Features is 1:10,000-scale data. It depicts the location of historic shoreline features and wetland boundaries for all of coastal Connecticut with the exception of the area of New Haven Harbor from the West River in West Haven to the New Haven/East Haven town boundary. The features also extend slightly beyond the Connecticut state lines into Rye, New York and Westerly, Rhode Island. Use this layer to display historic shoreline and wetlands. Since this data may be considered a crucial element in land use planning, determination of boundary extents, performing change studies for erosion and accretion examinations and other types of decision making this layer may also be used for analytic purposes. Use this layer with other 1:10,000-scale map data such as any other NOS T-sheet Shoreline or Wetland layers. Not intended for maps printed at map scales greater or more detailed than 1:10,000 scale (1 inch = 833.33 feet.)

1880s NOS T-Sheet Wetland Polygon Features is a 1:10,000-scale, polygon feature-based layer that includes information depicting historic wetlands for areas of coastal Connecticut during the 1880s. The layer depicts information found on topographic survey sheets (T-sheets) from the US Coast and Geodetic Survey (USC&GS), a predecessor to the National Ocean Service (NOS). The layer represents conditions at a particular point in time. The layer does not depict current conditions. The layer includes ground condition features such as wetland areas, interior wetland uplands, and interior wetand waterbodies. Semi-submerged marshes, referred to here as "low marshes," ocurring where it is possible to discern marsh-like features waterward of the shoreline are also included. Off shore and riverine islands and rocks may be included depending on the quality of their depiction on the t-sheet. It does not include any non wetland-centric elements that may have been depicted on the t-sheets such as buildings, roads, bridges, etc., nor does it include other off-shore features like mud flats, tidal flats, etc. Features are polygon locations that represent the approximate location of wetland areas and internal wetland features such as uplands or waterbodies. Shoreline, as depicted on the T-sheets that pre-date 1927, reference an approximation of Mean High Water (MHW). Although MHW is technically determined by averaging the height of the high water line, (HWL) the landward extent of the last high tide over a 19 year lunar cycle, USC&GS topographers appoximated MHW by familarizing themselves with the tidal conditions in a given area and noting the assorted physical characteristics of the beach. (For a more complete description of this and other shoreline indicators, the reader is directed to the following article: "Historical Shoreline Change: Error Analysis and Mapping Accuracy," Crowell, M., Leatherman, S., and Buckley, M. Journal of Coastal Research, Vol 7, No. 3, 1991, pp 839-852.) Attribute information is comprised of codes to identify individual features, encode wetland feature type information, and cartographically represent (symbolize) wetland features on a map. These codes were derived in part from the National Oceanic & Atmospheric Administration (NOAA) Coastal Services Center (CSC) Historic Digital Shoreline Capture project and modified by the State of Connecticut Department of Environmental Protection to address the inclusion of wetland areas. This data was compiled at 1:10,000 scale. This data is not updated. Purpose: 1880s NOS T-Sheet Wetland Polygon Features is 1:10,000-scale data. It depicts the location of historic wetland features for all of coastal Connecticut with the exception of the area of New Haven Harbor from the West River in West Haven to the New Haven/East haven town boundary. The features also extend slightly beyond the Connecticut state lines into Rye, New York and Westerly, Rhode Island. Use this layer to display historic wetlands. Since this data may be considered a crucial element in land use planning, determination of boundary extents, performing change studies for erosion and accretion examinations and other types of decision making this layer may also be used for analytic purposes. Use this layer with other 1:10,000-scale map data such as any other NOS T-sheet Shoreline or Wetland layers. Not intended for maps printed at map scales greater or more detailed than 1:10,000 scale (1 inch = 833.33 feet.)