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Draft Lakes Indicator - Pelagic Score (Southeast and Midwest Blueprint Indicator) [United States]

U.S. Fish and Wildlife Service Open Data · 2025 Full Details

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Full Details

Title
Draft Lakes Indicator - Pelagic Score (Southeast and Midwest Blueprint Indicator) [United States]
Description
Upstream watershed condition is very important in determining the nutrient, sediment, and contaminant loads entering a lake. All developed and agricultural land cover categories (disturbance) were added to quantify the amount of disturbed landcover that may negatively affect water quality entering the lake. 1. Assign the amount of disturbance in the contributing watershed: a. Join the attribute table "Archetypes_rawdata_2023-10-12.csv" (LaPierre et al. 2023) to the LAGOS Lakes dataset. b. Eliminate any lakes that do not have a valid watershed value (removes 3253 or 0.7 % of lakes) c. Add the upstream watershed amounts of agricultural and developed landcover "ws_nlcd2016_totalag_pct" and "ws_nlcd2016_totaldev_pct" to get "totdev_totag" d. Classify lake water quality based on the Midwest Glacial Lakes Partnership thresholds for watershed landcover composition and convert to raster: z 3 = if percent developed + percent ag in the watershed is <= 25 2 = if percent developed + percent ag in the watershed is >25 and <=60 1 = if percent developed + percent ag in the watershed is > 60 4. Using results from above, convert vector to raster to get: a. the whole lake class of contributing watershed condition. 7. Clean up errant pixels caused by non-overlapping LAGOS and NLCD open water using the condition: If the final score is NULL but there is an open water class value, then assign that value to the pixel, otherwise, keep the existing value.
Creator
U.S. Fish & Wildlife Service
Publisher
U.S. Fish and Wildlife Service Open Data
Temporal Coverage
Last Modified: 2025-02-26
Date Issued
2025-02-10
Rights
The United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information.
Access Rights
Public
Format
ArcGIS ImageMapLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from U.S. Fish and Wildlife Service Open Data on 2026-01-08.

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Cite and Reference

  • Citation
    U.S. Fish & Wildlife Service (2025). Draft Lakes Indicator - Pelagic Score (Southeast and Midwest Blueprint Indicator) [United States]. U.S. Fish and Wildlife Service Open Data. https://gis-fws.opendata.arcgis.com/content/fws::draft-lakes-indicator-pelagic-score-southeast-and-midwest-blueprint-indicator (web service)
  • BTAA Geoportal Link

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