Law Enforcement boundary polygon data for Bowie, Cass, Delta, Franklin, Hopkins, Lamar, Morris, Red River, and Titus Counties within Texas, and Miller County, Arkansas.For questions, problems, or more information, contact gis@atcog.orghttps://atcog.org/

Feature symbolizing regulated drain centerlines in Porter County, IN. Regulated Drain definition:"A regulated drain is an open drain, tiled drain or combination designated by the county surveyor as a drain in need of upkeep and maintenance and regulated by county govenment."Porter County makes no warranty of completeness of accuracy for this data feature. Data is provided ‘as is’ and is subject to continual update maintenance, revision and correction as needed. The burden for determining appropriateness for use rests solely on the user. This data does not represent a survey. No liability is assumed for this data.Data is created and maintained by Porter County GIS staff using ESRI ArcGIS Desktop licensed software. For questions related to this data contact Chuck Miller, Porter County GIS Manager email: CMiller@porterco.org phone: 219-465-3537.Porter County GISDepartment of Development &Stormwater Management155 Indiana Ave, Suite 311Valparaiso, IN 46383

1:24,000 scale Geologic Map of the Little Horse Canyon Quadrangle, Nevada and Utah. Detailed geologic mapping by Phillip B. Gans, Elizabeth L. Miller, Carey C Huggins, and Jeffrey Lee in 1999. Map includes two cross sections and description of 35 units. One of the seven quadrangles in the north Snake Range mapped by Stanford University's Summer Field program. The GIS work was in support of the U. S. Geological Survey COGEOMAP program. The Snake Range, in eastern White Pine County, Nevada, is a 150-km-long, north-trending mountain range in the northern Basin and Range province. Sacramento Pass divides the range into two main parts, the northern and southern Snake Range. The Little Horse Canyon Quadrangle is located on the eastern flank of the northern Snake Range and includes portions of the Horse Canyon, little Horse Canyon, and Smith Creek drainages. The Snake Range is considered a classic example of a Cenozoic "metamorphic core complex" (for example, Coney, 1979). The most prominent structural feature of the range is the northern Snake Range decollement (NSRD), a low-angle fault. Previous work includes Hose and Blake (1976) a 1 :250,000-scale geologic map of White Pine County which included the first published geologic map of all of the northern Snake Range; Nelson (1966, 1969) mapped the northern e,nd of the range as part of a regional mapping project that included the Kern Mountains and southern Deep Creek Range; studies in the northern Snake Range by geologists based at Stanford University began in 1981 by Miller and others (1983) and Gans and Miller (1983). Geologic mapping was supported by the Quadrangle mapping Program of the Geological Society of Nevada and by Echo Bay Minerals Company, Magma Nevada mining Company (now BHP), and the NBMG Mining Coop Fund. Base map: U. S. Geological Survey Little Horse Canyon 7.5-minute Quadrangle, 1985. To download and view this map resource, associated text, and GIS zipped data-set, please see the links provided.

description: The geology of Spokane County and vicinity, Washington and Idaho was compiled from Carrara and others (1995), Joseph (1990), Kiver and others (1979), Miller (written communication, 1995), and Waggoner (1990a, b) for input into an Arc/Info geographic information system (GIS). The digital geologic map database can be queried in many ways to produce a variety of derivative geologic maps.; abstract: The geology of Spokane County and vicinity, Washington and Idaho was compiled from Carrara and others (1995), Joseph (1990), Kiver and others (1979), Miller (written communication, 1995), and Waggoner (1990a, b) for input into an Arc/Info geographic information system (GIS). The digital geologic map database can be queried in many ways to produce a variety of derivative geologic maps.

Boundary describes the extent of the Spokane Valley-Rathdrum prairie aquifer from south end of lake Pend Oreille, Idaho - thru Rathdrum Prairie, the Spokane Valley, turning north to discharge at little Spokane River, and Spokane river north and west of the city of Spokane. Source data overview:Spokane Valley aquifer (WA State only) digitized in 1988 by Spokane Co. Engineer Dept from USGS 1977 hydrologic study of the Spokane Aquifer. This layer digitized from 1:24000 quad maps into the County's GDMS GIS. The USGS relied heavily on contour lines that described the valley floor to delineate the Spokane aquifer boundary. The original boundary had the Spokane River as it's west edge, but was revised (by Bea Leckaff Spokane County WQMP-GIS) in June, 1994, under the direction of Stan Miller to include the flood plain terraces on the west side of the river, down to the Little Spokane River confluence. The extent of the aquifer was revised again in March, 1995 to reflect new information from CH2MHill aquifer studies being done for the City of Spokane (to support Wellhead Protection). The revised aquifer extends the influence of impervious basalt outcroppings from the Spokane Falls area to the Trinity Triangle, (Drumheller Springs). The corrections were made by BBL from information provided by Stan Miller.

Idaho Portion of the Aquifer data came from Idaho Panhandle Public Health GIS SCALE: Idaho data digitized originally from 1:24000 USGS maps LAST UPDATED: March 1993- received Idaho data and matched to Spokane county aquifer data.

This dataset represents Albemarle County's magisterial districts as they currently exist. The following information applies to this current file: This dataset represents Albemarle County's magisterial district boundaries based on 2010 US Census data. Albemarle County Board of Supervisor members are elected based on voting results from particular magisterial districts. These boundaries were approved by the Board on 5/4/2011 and the Department of Justice gave preclearance approval on 7/6/2011. Includes the following changes from the previous Magisterial Districts GIS layer: 1) Renamed the Burnley Precinct to Baker-Butler. 2) Moved Briarwood and Camelot subdivisions from Rivanna District (Baker-Butler Precinct) to Rio District (Northside Precinct). 3) Moved boundary between Hollymead Precinct and Baker-Butler Precinct south from the North Fork Rivanna River to a stream between Forest Lakes and Hollymead subdivisions. 4) Moved Baker-Butler Precinct polling place from Northridge Community Church to Baker-Butler elementary school. 5) Moved boundary between Jack Jouett District (University Hall Precinct) and Samuel Miller District (East Ivy Precinct) west to Rt 29 Bypass and Fontaine Ave Ext to include all of UVA in the University Hall precinct. 6) Moved Yellow Mountain Precinct from White Hall District to Samuel Miller District. 7) Moved Porter's Precinct from Scottsville District to Samuel Miller District

Boundary describes the extent of the Spokane Valley-Rathdrum Prairie aquifer from south end of lake Pend Oreille, Idaho - through Rathdrum Prairie, the Spokane valley, turning north to discharge at little Spokane river, and Spokane river north and west of the city of Spokane. SOURCE DATA OVERVIEW: Spokane Valley aquifer (WA State only) digitized in 1988 by Spokane Co. Engineer Dept from USGS 1977 hydrologic study of the Spokane Aquifer. This layer digitized from 1:24000 quad maps into the County's GDMS GIS. The USGS relied heavily on contour lines that described the valley floor to delineate the Spokane aquifer boundary. The original boundary had the Spokane River as it's west edge, but was revised (by Bea Leckaff Spokane County WQMP-GIS) in June, 1994, under the direction of Stan Miller to include the flood plain terraces on the west side of the river, down to the Little Spokane River confluence. The extent of the aquifer was revised again in March, 1995 to reflect new information from CH2MHill aquifer studies being done for the City of Spokane (to support Wellhead Protection). The revised aquifer extends the influence of impervious basalt outcroppings from the Spokane Falls area to the Trinity Triangle, (Drumheller Springs). The corrections were made by BBL from information provided by Stan Miller.

Idaho Portion of the Aquifer data came from Idaho Panhandle Public Health GIS SCALE: Idaho data digitized originally from 1:24000 USGS maps LAST UPDATED: March 1993- received Idaho data and matched to Spokane county aquifer data.

7 aerial photographs were taken along the Little Missouri River in 1949. All images were geo-referenced to the 1995 digital orthophoto quarter quadrangles as described by Miller and Friedman (2009). Both the flood plain and active channel of the river were delineated on the 1995 digital orthophoto quadrangles and overlaid on rectified photos. ArcGIS was used to draw the polygons that delineate the flood plain and active channel; the delineation was saved as a SHP file. The separate images (geoTIFFs) can be viewed as a composite along with that year's channel delineation (SHP file) using a geographic information system (GIS) application. Reference: Miller, J.R., and J.M. Friedman. 2009. Influence of flow variability on flood-plain formation and destruction, Little Missouri River, North Dakota. Geological Society of America Bulletin 121:752-759.

This dataset represents Albemarle County's voting precincts (sub-units of magisterial districts) as they currently exist.

The following information applies to this current file:

This dataset represents Albemarle County's voting precincts based on 2010 US Census data.

These boundaries were approved by the Board on 5/4/2011 and the Department of Justice gave preclearance approval on 7/6/2011.

Includes the following changes from the previous Voting Precinct GIS layer: 1) Renamed the Burnley Precinct to Baker-Butler. 2) Moved Briarwood and Camelot subdivisions from Rivanna District (Baker-Butler Precinct) to Rio District (Northside Precinct). 3) Moved boundary between Hollymead Precinct and Baker-Butler Precinct south from the North Fork Rivanna River to a stream between Forest Lakes and Hollymead subdivisions. 4) Moved Baker-Butler Precinct polling place from Northridge Community Church to Baker-Butler elementary school. 5) Moved boundary between Jack Jouett District (University Hall Precinct) and Samuel Miller District (East Ivy Precinct) west to Rt 29 Bypass and Fontaine Ave Ext to include all of UVA in the University Hall precinct. 6) Moved Yellow Mountain Precinct from White Hall District to Samuel Miller District. 7) Moved Porter's Precinct from Scottsville District to Samuel Miller District.