Lake Habitat Survey data collected using the standard Lake Habitat Survey (LHS) methodology by accredited surveyors. LHS is a standard survey of a lake where data is collected in a replicable manner. At 10 ‘Hab-plots’ (Habitat Observation plots) specific details are recorded about lake marginal features. General information about the lake is recorded in the 'sweep-up' section of the survey. The bulk of the surveys were conducted between 2004 and 2009. A total of 99 lakes in England have been surveyed once. This dataset contains summary information of the LHS surveys. The following information has been excluded from the survey data because there is a risk that we might be disclosing personal data: • Surveyor name • Primary use • Litter, dump, landfill (%) • Lake base data – this has been excluded because it was originally taken from an external source. Up-to-date data for UK lakes is available from CEH (Centre for Ecology & Hydrology) through their Lakes Portal (https://eip.ceh.ac.uk/apps/lakes/). Attribution statement: © Environment Agency copyright and/or database right 2016. All rights reserved.

Habitat and ecosystem data used to conduct a baseline survey of coastal habitat in Lake Superior, Nipigon Bay, and Black Bay are included in this dataset. The Lake Superior Survey methodology consists of four general steps; 1) delineating the coastal ecosystem into coastal units based on water flow, ecology, and geology; 2) selecting key habitat types including wetlands, uplands (natural and anthropogenic), tributaries, and inland lakes and ponds, and the measures to assess each habitat type and the entire coastal ecosystem; 3) conducting a spatial analysis and summarizing results; and 4) sharing results.

Habitat and ecosystem data used to conduct a baseline survey of coastal habitat in Lake Erie, St. Clair River, Lake St. Clair and Detroit River are included in this dataset. The Lake Erie Survey methodology consists of four general steps; 1) delineating the coastal ecosystem into coastal units based on water flow, ecology, and geology; 2) selecting key habitat types including wetlands, uplands (natural and anthropogenic), tributaries, and inland lakes and ponds, and the measures to assess each habitat type and the entire coastal ecosystem; 3) conducting a spatial analysis and summarizing results; and 4) sharing results.

Habitat and ecosystem data used to conduct a baseline survey of coastal habitat in Lake Ontario, Niagara River and the St. Lawrence River (up to the Quebec border) are included in this dataset. The Lake Ontario Survey methodology consists of four general steps; 1) delineating the coastal ecosystem into coastal units based on water flow, ecology, and geology; 2) selecting key habitat types including wetlands, uplands (natural and anthropogenic), tributaries, and inland lakes and ponds, and the measures to assess each habitat type and the entire coastal ecosystem; 3) conducting a spatial analysis and summarizing results; and 4) sharing results.

The Aquatic Habitat Inventory contains lake, river and stream survey data collected from the 1950s to the 1990s. These surveys were conducted to acquire basic knowledge of the chemical, physical and biological characteristics of Ontario’s lakes, rivers, and streams to aid in watershed planning, aquatic habitat conservation and fisheries management.

Habitat and ecosystem data used to conduct a baseline survey of coastal habitat in Lake Huron, Georgian Bay, and St. Marys River are included in this dataset. The Lake Huron Survey methodology consists of four general steps; 1) delineating the coastal ecosystem into coastal units based on water flow, ecology, and geology; 2) selecting key habitat types including wetlands, uplands (natural and anthropogenic), tributaries, and inland lakes and ponds, and the measures to assess each habitat type and the entire coastal ecosystem; 3) conducting a spatial analysis and summarizing results; and 4) sharing results.

Realized thermal niche and habitat use are two conceptualizations of fish habitat based on organismal performance or lake-specific ecology, respectively. Both habitat types were compared for lake trout (Salvelinus namaycush) and brook trout (S. fontinalis) co-occurring in four large (> 500 ha) oligotrophic lakes. Lakes were partitioned into two morphological categories based on possession of a central or non-central deep basin with corresponding differences in adjoining shelf areas. Lake asymmetry in basin location has been shown to strongly influence food web connections based on isolation of basins from shelf areas. Generally, overlap between both habitat types occurred in several comparisons with lake trout, suggesting that thermal habitat is a reasonable proxy for habitat use boundaries though not a full replacement for insights gained from habitat use models. For brook trout, overlap was not as consistent, especially for lakes with non-central basins. In central basin lakes, the..., Data are from one-hour set duration benthic gill-netting depth stratified randomized netting surveys conducted in four large lakes in Algonquin Provincial Park using standard North American large-mesh gillnets. Surveys were conducted during periods of thermal stratification (July-August) in the daytime. Each site was sampled at least three times during a survey. Lake volumes for hypsographic data were derived from digital bathymetric surveys conducted by Harkness Lab staff. ArcGIS software was used to calculate lake volume at 1 metre resolution from the digital bathymetry rasters. Temperature and DO profiles were collected mid-basin in each lake during the netting surveys. , Data and code to replicate the occupancy and overlap analysis and figures are provided in .Rdata files and can be opened in the R Statistical computing language. Analysis code is provided as .R scripts and is commented. .R files can be opened in any R editor, but are best viewed in RStudio. .Rdata files can be opened in any instance of R. Files are provided in a compressed file containing all files to replicate the analysis found in the paper. To recreate the hypsographic figure lake volume data is provided in a .csv file and lake outlines and contours in a .gpkg file. Both of these can be opened in code provided in a .R file which can be used in R or RStudio.

Lakes (taken from the Ordnance Survey MasterMap Topography layer hydrology/static water) that meet one or more priority habitat criteria.More detailed metadata description to follow.Full metadata can be viewed on data.gov.uk.

Aquatic vegetation surveys were conducted on Stillwater Wildlife Management Area, Canvasback Club, Carson Lake, and several other wetlands in Lahontan Valley, Nevada. This was the second drought year in a row, and wetland acreage was severely reduced. Species diversity was low on most wetlands, and sago pondweed was the dominant species. The greatest production of submerged vegetation occurred in Lower Foxtail and East Alkali #1 at Stillwater WMA. Old River Reservoir and S-Line Reservoir were the only other wetlands that produced substantial amounts of submerged vegetation. No submerged vegetation was found on the major wetland units of the Canvasback Club or Carson Lake.

The fish dataset presents results from High Mountain Lakes (HML), SLIP (Sierra Lakes Inventory), and Redwood Sciences Laboratory (RSL) project fishery surveys. Both projects collected data on high elevation waters in the Sierra Nevada and mountains of Northern California using a standard protocol. Surveys of fish, amphibians, habitat, and stream barriers were done at each site between late-May and October. Fish surveys were mainly done using standardized 6 panel monofilament gill nets, set for 8-12 hours. Fish species, length, weight, and sex are recorded for each individual. As many sites were only visited once, the data presented represent a "snapshot" view of the fish population in a particular lake. SLIP surveys were done in the John Muir Wilderness by Roland Knapps crews in 1995-1996. HML surveys were done in Regions 2, 4 and 6 by CA DFW crews between 2001 and 2010. CDFW crews did not survey within National Park boundaries and no SLIP data from National Parks is included here. RSL surveys were conducted between 2001 and 2006, and additional surveys in Northern California ranges were conducted by HML crews in 2008 and 2010. As of May 2010, approximately 85% of the total mapped waters in the High Mountain Lakes range have been surveyed. It should be noted that the High Mountain Lakes expanded in 2007 to include water bodies in cascades frog range. "Baseline" survey types indicate a full survey was done at the site, including amphibian, fish, habitat characteristics, tributary characteristics, and photos. Generally this survey type occurs during the initial visit to a particular site. "Monitoring" surveys are repeat surveys of fish or amphibian populations at a site, and generally do not include habitat or stream barrier data. WHAT EACH RECORD REPRESENTS: This dataset represents field data collected in high elevation Sierra Nevada and Northern California lakes, meadows, streams, and springs. If no fish were observed, each record represents a single fish survey. If

description: Since the last vegetative survey in 1965, the marsh at Canvasback Gun Club has remained virtually unchanged. The Arthur-Johnson Ponds produced most of the waterfowl food. Dutch Bill Lake, Big Mallard Lake and Freeman Lakes were practically barren of submergent vegetation. The purpose of the survey was to determine species composition, relative abundance and distribution of submergents in the Canvasback Gun Club in Nevada.; abstract: Since the last vegetative survey in 1965, the marsh at Canvasback Gun Club has remained virtually unchanged. The Arthur-Johnson Ponds produced most of the waterfowl food. Dutch Bill Lake, Big Mallard Lake and Freeman Lakes were practically barren of submergent vegetation. The purpose of the survey was to determine species composition, relative abundance and distribution of submergents in the Canvasback Gun Club in Nevada.

National Lakes Assessment 2012 Datafiles for Report “National Lakes Assessment 2012: A Collaborative Survey of lakes in the United States”: The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on the extent of lakes that support healthy biological condition and recreation, estimate how widespread major stressors are that impact lake quality, and provide insight into whether lakes nationwide are getting cleaner. This dataset is an archived (zipped) file comprised of chemical, physical and biological files used in developing the NLA 2012 report. Sampling was conducted in the summer of 2012 at approximately 1000 sites in the conterminous U.S. Sites were selected using a statistical survey (probabilistic) design. The files include water chemistry, profile data, benthic macroinvertebrates, physical habitat, landscape metrics, phytoplankton data, secchi depth, data, tropic status, zooplankton, etc. Users are encouraged to visit the NARS data webpage for updates to data files (e.g., for example updated zooplankton files) and data from other surveys. https://www.epa.gov/national-aquatic-resource-surveys/data-national-aquatic-resource-surveys Citation for the NLA 2012 archived data: U.S. Environmental Protection Agency. National Aquatic Resource Surveys. National Lakes Assessment 2012 Report. Archived Data. (INSERT data and metadata files used). Available from U.S. EPA web page: https://www.epa.gov/national-aquatic-resource-surveys/national-results-and-regional-highlights-national-lakes. DOI: 10.23719/1529584 EPA encourages users who are publishing subsets of the data (say as part of a journal article publication) to include the above citation. EPA also encourages users of the data to include the following acknowledgement: “The National Lakes Assessment 2012 data were a result of the collective efforts of dedicated field crews, laboratory staff, data management and quality control staff, analysts and many others from EPA, states, tribes, federal agencies, universities, and other organizations. Please contact nars-hq@epa.gov with any questions.” Additional information: NLA is part of the National Aquatic Resource Surveys, an EPA/State/Tribal partnership. The National Aquatic Resource Surveys (NARS) are statistical surveys designed to assess the status of and changes in quality of the nation’s coastal waters, lakes and reservoirs, rivers and streams, and wetlands. Using sample sites selected at random, these surveys provide a snapshot of the overall condition of the nation’s water. Because the surveys use standardized field and lab methods, we can compare results from different parts of the country and between years. Citation information for this dataset can be found in Data.gov's References section.

description: A large-scale lake study on Interior Alaska National Wildlife Refuges (NWR) was undertaken from 1984 1986. Six NWRs were surveyed (Innoko, Kanuti, Koyukuk, Nowitna, Tetlin, and Yukon Flats) and lake-specific habitat and fish data were collected from 135 lakes, though a comprehensive report of the findings was never published. This Alaska Fisheries Data Series Report presents these data, allowing public access to this important information. Lake locations, reference and bathymetric maps, lake habitat descriptions, and fisheries data are organized and presented. Lowland lakes were most commonly sampled (74), followed by foothill (31) and oxbow (30) lakes. The highest elevation and deepest sampled lakes were in Tetlin NWR. The highest water quality measurements (conductivity, total alkalinity, total hardness, and pH) came from Yukon Flats NWR lakes. Of the 135 lakes sampled, 102 lakes contained fish. A total of 15 fish species were collected throughout the study, with Tetlin NWR lakes having the highest species diversity (9 species) and Nowitna and Yukon Flats NWRs having the lowest (6 species). Humpback whitefish Coregonus clupeaformis, least cisco C. sardinella, and northern pike Esox lucius had the widest distribution, being present in all six refuges. The highest frequencies of fish occurrence were in oxbow and lowland lakes, lakes with river connections, and lakes with high flood potential. Foothill lakes and lakes without river connections had the lowest probability of fish capture. Koyukuk NWR had the most sampled lakes containing fish (96%) and Yukon Flats NWR had the fewest sampled lakes with fish present (49%). Northern pike was the most ubiquitous species, occurring in 90% of all lakes containing fish. Fish species diversity was highest in lakes with river connections (14 species).; abstract: A large-scale lake study on Interior Alaska National Wildlife Refuges (NWR) was undertaken from 1984 1986. Six NWRs were surveyed (Innoko, Kanuti, Koyukuk, Nowitna, Tetlin, and Yukon Flats) and lake-specific habitat and fish data were collected from 135 lakes, though a comprehensive report of the findings was never published. This Alaska Fisheries Data Series Report presents these data, allowing public access to this important information. Lake locations, reference and bathymetric maps, lake habitat descriptions, and fisheries data are organized and presented. Lowland lakes were most commonly sampled (74), followed by foothill (31) and oxbow (30) lakes. The highest elevation and deepest sampled lakes were in Tetlin NWR. The highest water quality measurements (conductivity, total alkalinity, total hardness, and pH) came from Yukon Flats NWR lakes. Of the 135 lakes sampled, 102 lakes contained fish. A total of 15 fish species were collected throughout the study, with Tetlin NWR lakes having the highest species diversity (9 species) and Nowitna and Yukon Flats NWRs having the lowest (6 species). Humpback whitefish Coregonus clupeaformis, least cisco C. sardinella, and northern pike Esox lucius had the widest distribution, being present in all six refuges. The highest frequencies of fish occurrence were in oxbow and lowland lakes, lakes with river connections, and lakes with high flood potential. Foothill lakes and lakes without river connections had the lowest probability of fish capture. Koyukuk NWR had the most sampled lakes containing fish (96%) and Yukon Flats NWR had the fewest sampled lakes with fish present (49%). Northern pike was the most ubiquitous species, occurring in 90% of all lakes containing fish. Fish species diversity was highest in lakes with river connections (14 species).

This data release contains model inputs used to estimate surface water greenhouse gas fluxes from two large arid reservoirs, Lake Powell and Lake Mead. The release also contains empirical, spatially explicit water quality and greenhouse gas data from a single field survey conducted in Lake Powell in July of 2017. Finally, this release contains surface area estimates of shallow (< 15m) tributary regions of Lake Powell under different water level scenarios.

Recent reports of serious declines of the rainbow trout sport fishery in this region have created a need for information on the annual recruitment and relative species composition at these lakes. The most recent concern has been an outburst of beaver activities which appear to have affected annual recruitment of rainbow trout by blocking many or all of a lake's streams with impassable dams. The primary focus of this work was on description of inlet and outlet streams as assessments of available rainbow trout spawning sites and to give recommendations for possible habitat enhancements at these small lakes.

Visual survey community data for Lake Tanganyika's littoral fish species. Surveys represent underwater visual surveys undertaken at depths of 5 and 10 metres within the littoral habitat. Surveys were undertaken across 21 sites with ten surveys undertaken at each site. Surveys were undertaken within 2016 and 2017. For further information including survey design and site GPS locations see:Doble C. J, Hipperson H, Salzburger W, Horsburgh G, Mwita C, Murrell D. J and Day J. J. (Accepted) Testing the performance of environmental DNA metabarcoding for surveying highly diverse tropical fish communities: A case study from Lake Tanganyika. Environmental DNA

In 2024, the Bureau of Freshwater and Biological Monitoring conducted macrophyte surveys on seven reference lakes. The goals of the surveys are to check status of general lake ecosystem health, determine the presence / absence of invasive species, determine the presence of RTE species, and track changes in plant community.

Deer Fawning Habitat: Potential high elevation deer habitat areas within the Lake Tahoe Basin

Bald Eagle Winter Habitat: Potential bald eagle winter habitat areas within the Lake Tahoe Basin

Bald Eagle Nest Buffer: Surveys conducted for nesting bald eagle are done throughout the summer by NDOW and CA State Parks, with some help by TRPA. This layer shows all nests that were active during the 2019 season. Both active and inactive bald eagle nests are protected under TRPA regulations. Only active nests that produce at least 1 fledgling are counted by TRPA as part of its' Threshold Standard for nesting bald eagles.

Golden Eagle Nest Buffer: Areas identified as the most suitable habitat for nesting Golden Eagles in the Lake Tahoe Basin.

Goshawk Threshold Zone: Goshawk threshold zones based on the TRPA definition of 500 acres (± 5 acres) of the best habitat surrounding a nest, including a ¼ mile radius around the nest tree.

Osprey Nest Buffer: Monthly boat and walk-in osprey nesting surveys are conducted throughout the summer by the TRPA, LTBMU, NDOW, and CA State Parks. These layers show all nests that were active and inactive during the 2019 season. Both active and inactive osprey nests are protected under TRPA regulations. Only active nests are counted by TRPA as part of its' Threshold Standard for nesting osprey.

Peregrine Falcon Nest Buffer: Monthly nesting surveys are conducted throughout the summer by the TRPA and LTBMU. This layer shows all nests that were active* during the 2017 season.

Waterfowl Habitat: Waterfowl locations within the Lake Tahoe Basin. These include lakes, wetlands, meadows, and golf courses where waterfowl occur.

Fish Habitat: Near-shore fish habitat around Lake Tahoe CA/NV

Willow Flycatcher Habitat: Occupied and emphasis habitat for willow flycatcher in the LTBMU

Sierra Nevada Yellow-legged Frog Critical Habitat: Areas of Final critical habitat for Rana sierrae (Sierra Nevada Yellow-Legged Frog)

Sierra Nevada Yellow-legged Frog Suitable Habitat: Suitable habitat for Sierra Nevada Yellow-legged Frog on the Lake Tahoe Basin Management Unit

Goshawk PAC: Northern goshawk Protected Activity Centers (PACs) delineated for the Lake Tahoe Basin Management Unit

Spotted Owl PAC: California spotted owl Protected Activity Centers (PACs) delineated for the Lake Tahoe Basin Management Unit as of July 22, 2008

Marten Den: Surveyed Marten Dens in the Lake Tahoe Basin

Bat Roost: Location of all known bat roosts in the Lake Tahoe Basin

Observation data (towed video, BRUVs) collected in Victorian state waters at Oxbow Lake and Glenelg River.This footage was collected by researchers from Deakin University, Victorian Department of Primary Industries - Marine and Freshwater Resources Institute (MAFRI) and Parks Victoria.The original footage has been converted from various formats including VHS and MiniDV to digital format, with funds supplied by Deakin University Library. Underwater footage gathered from other geographical locations around Victoria from the Victorian Marine Habitat Mapping Program can be accessed via the links featured at the bottom of this record.High quality versions of the videos may be requested via Deakin University Library.

Bay Scale Assessment of Nearshore Habitat Bras d'Or Lake - Chapel Island 2008 data is part of the publication Bay Scale Assessment of Nearshore Habitat Bras d'Or Lakes. A history of nearshore benthic surveys of Bras d’Or Lake from 2005 – 2011 is presented. Early work utilized drop camera and fixed mount sidescan. The next phase was one of towfish development, where camera and sidescan were placed on one platform with transponder-based positioning. From 2009 to 2011 the new towfish was used to ground truth an echosounder. The surveys were performed primarily in the northern half of the lake; from 10 m depth right into the shallows at less than 1 m. Different shorelines could be distinguished from others based upon the relative proportions of substrate types and macrophyte canopy. The vast majority of macrophytes occurred within the first 3 m of depth. This zone was dominated by a thin but consistent cover of eelgrass (Zostera marina L.) on almost all shores with a current or wave regime conducive to the growth of this plant. However, the eelgrass beds were frequently in poor shape and the negative impacts of commonly occurring water column turbidity, siltation, or possible localized eutrophication, are suspected. All survey data were placed into a Geographic Information System, and this document is a guide to that package. The Geographic Information System could be used to answer management questions such as the placement and character of habitat compensation projects, the selection of nearshore protected areas or as a baseline to determine long term changes. Vandermeulen, H. 2016. Video-sidescan and echosounder surveys of nearshore Bras d’Or Lake. Can. Tech. Rep. Fish. Aquat. Sci. 3183: viii + 39 p. Cite this data as: Vandermeulen H. Bay Scale Assessment of Nearshore Habitat Bras d'Or Lake - Chapel Island 2008. Published May 2022. Coastal Ecosystems Science Division, Fisheries and Oceans Canada, Dartmouth, N.S.