We sampled 77 lakes in summer 2010 encompassing a range of disturbance (Low, Moderate, High). Disturbance was estimated based on landscape measures (e.g., trail density, proximity to roads) on both National Park and National Forest land. These lakes were sampled for physical habitat, water chemistry, physio-chemical profiles, zooplankton, littoral macroinvertebrates, and vertebrate assemblages using a peer-reviewed protocol for mountain lakes and ponds developed by the Klamath Inventory and Monitoring Program.

This dataset contains monitoring data for lakes and pond at Crater Lake NP, Lassen Volcanic NP, and Redwood NSP. Ponds and lakes are integral components of the Klamath Network landscape. Healthy water bodies are rich in biodiversity and support many ecosystem functions, but lakes and ponds are complex ecosystems that are influenced by a range of local as well as regional environmental conditions. Therefore, lakes can be useful indicators of impacts from disturbances across the landscape, for example nearby impacts, such as visitor use and distant impacts, such as agricultural activities and wildfires. Since 2013, the Klamath Inventory and Monitoring Network has been conducting monitoring of lakes and ponds in three parks. The protocol combines monitoring water quality characteristics of the lakes, such as the chemical and physical conditions, with monitoring the aquatic communities that the lake supports, such as the fish, plants, and macro invertebrates. Objectives are to: Determine the status and trends of ecological conditions in Klamath Network mountain ponds and lakes Assist parks with “impaired quality waters,” also known as “303d” lists as defined by the Clean Water Act Assist parks with monitoring of “Outstanding National Resource Waters” or Tier 3 waters as defined by the Clean Water Act We measure/collect: Physical environment including substrate composition and percentage, depth, area, water clarity, shoreline complexity, and water level. Water quality parameters including dissolved oxygen, temperature, specific conductivity, turbidity, and pH. Water anions, cations, dissolved organic carbon, and nutrients. Algal biomass. Littoral zone benthic macroinvertebrates. Visual Encounter Surveys for amphibians. Fish populations. Photographs to provide visual comparisons over time.

This dataset contains monitoring data for lakes and pond at Crater Lake NP, Lassen Volcanic NP, and Redwood NSP. Ponds and lakes are integral components of the Klamath Network landscape. Healthy water bodies are rich in biodiversity and support many ecosystem functions, but lakes and ponds are complex ecosystems that are influenced by a range of local as well as regional environmental conditions. Therefore, lakes can be useful indicators of impacts from disturbances across the landscape, for example nearby impacts, such as visitor use and distant impacts, such as agricultural activities and wildfires. Since 2013, the Klamath Inventory and Monitoring Network has been conducting monitoring of lakes and ponds in three parks. The protocol combines monitoring water quality characteristics of the lakes, such as the chemical and physical conditions, with monitoring the aquatic communities that the lake supports, such as the fish, plants, and macro invertebrates. Objectives are to: Determine the status and trends of ecological conditions in Klamath Network mountain ponds and lakes Assist parks with “impaired quality waters,” also known as “303d” lists as defined by the Clean Water Act Assist parks with monitoring of “Outstanding National Resource Waters” or Tier 3 waters as defined by the Clean Water Act We measure/collect: Physical environment including substrate composition and percentage, depth, area, water clarity, shoreline complexity, and water level. Water quality parameters including dissolved oxygen, temperature, specific conductivity, turbidity, and pH. Water anions, cations, dissolved organic carbon, and nutrients. Algal biomass. Littoral zone benthic macroinvertebrates. Visual Encounter Surveys for amphibians. Fish populations. Photographs to provide visual comparisons over time.

The National Aquatic Resource Surveys National Lakes Assessment data contain lake conductivity information at lakes in the contiguous United States. The LakeCat data contain watershed metrics for lakes in the contiguous United States. This dataset is associated with the following publication: Dumelle, M., J. Ver Hoef, A. Handler, R. Hill, M. Higham, and A. Olsen. Modeling lake conductivity in the contiguous United States using spatial indexing for big spatial data. Spatial Statistics. Elsevier Ltd, Oxford, UK, 59: 100808, (2024).

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 lake quality is improving or getting worse. This dataset is an archived (zipped) file comprised of chemical, physical and biological files used in developing the NLA 2022 report. Sampling was conducted in the summer of 2022 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, secchi depth, tropic status, zooplankton, etc. Users are encouraged to visit the NARS data webpage for updates to data files and data from other surveys. https://www.epa.gov/national-aquatic-resource-surveys/data-national-aquatic-resource-surveys Citation for the NLA 2022 archived data: U.S. Environmental Protection Agency. 2024. National Lakes Assessment: The fourth collaborative survey of lakes in the United States. EPA 841-R-24-006. U.S. Environmental Protection Agency, Office of Water and Office of Research and Development. https://nationallakesassessment.epa.gov/webreport 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 2022 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.”. Citation information for this dataset can be found in Data.gov's References section.

Ten groundwater piezometers and lake-level stilling wells were deployed in Upper Klamath Lake (UKL), Oregon during May through October 2017. Piezometers and stilling wells were deployed in pairs so that water levels could be measured relative to a common measuring point (MP) at each location. Piezometers were installed in the lakebed sediment, with screens from 3.92 to 4.92 feet below the sediment-water interface (lakebed). Stilling wells were screened open to the lake. Discrete depth-to-water check measurements were collected at all ten locations at about two-week intervals using a calibrated electric water-level tape.

Complete dataset that comprised the manuscript, "Shallow lake management enhanced habitat and attracted water birds during fall migration" by Danelle M. Larson and others. The data collection and processing was funded by the Minnesota Department of Natural Resources.

Complete dataset that comprised the manuscript, "Shallow lake management enhanced habitat and attracted water birds during fall migration" by Danelle M. Larson and others. The data collection and processing was funded by the Minnesota Department of Natural Resources.