Lake Conditions Assessment - Draft v2 [U.S. Fish and Wildlife Service] Full Details

Full Details

Title:

Lake Conditions Assessment - Draft v2 [U.S. Fish and Wildlife Service]

Description:

This lakes condition assessment is DRAFT based on methods in development with the Southeast Conservation Adaptation Strategy and the Midwest Landscape Initiative. This layer is being made public to gather feedback from stakeholders and should not be used as an authoritative evaluation. The result presented here are based on assigning 1) a pelagic condition using the upstream watershed condition as reported for the LAGOS lakes and 2) a nearshore condition assessment where adjacent riparian landcover (natural or non-natural) is assigned to a 100 m internal buffer from lakeshore into the lake. 1) WQ/Pelagic scoring is based on total upstream percent ag + percent developed in the watershed. 0-5% = 55-15% = 415-43% = 343-80% = 280-100% = 1 2) If the landcover adjacent to the shoreline is natural, the nearshore zone (100m buffer inside the lake), gets an additional point. VGood Pelagic, Good Nearshore 5 + 1 = 6VGood Pelagic, Poor Nearshore5 + 0= 5VGood Pelagic=5Good Pelagic, Good Nearshore4+ 1=5Good Pelagic, Poor Nearshore4+ 0=4Good Pelagic=4Fair Pelagic, Good Nearshore3+ 1= 4Fair Pelagic, Poor Nearshore3+ 0= 3Fair Pelagic=3Poor Pelagic, Good Nearshore2+ 1=3Poor Pelagic, Poor Nearshore2+ 0=2Poor Pelagic=2VPoor Pelagic, Good Nearshore1+ 1=2VPoor Pelagic, Poor Nearshore1+ 0=1VPoor Pelagic=1============================================================Brief Mapping Steps1.NLCD2021 set 11=NULL2.9x9 mode moving window over NLCD (majority in 9x9)3.Assign natural (=1) /non natural (=0) to RAT (barren = non nat); zero everywhere else; set no data to 2404.Use LOCUS lakes and attributes - has better representation across the SE - esp for new reservoirs in TX which are absent in NHD5.Join LOCUS lake with archetypes raw data table6.Select only lakes that have matching archetype data7.Buffer lakes (inner) by -100m.8.Union selected LOCUS lakes and buffers9.Calculate (perag + perdev) => totag_totdev10.Assign pelagic value using modified (5) totag_totdev quantiles11.Convert joined LOCUS lake vector to raster - use pelagic classes as "Value"12.Convert joined LOCUS lake vector to raster - use littoral flag as "Value" (nodata to non lentic cells will exclude riparian and land)13.Combine rasters as: [#12 Littoral (littoral = 1, nonlittoral=0) * #3 moving window (natural=1 vs non-natural=0)] + #11 pelagic (upstream watershed score)14.Fill any gaps with pelagic score==========================================================================

Creator:

Department of the Interior

Provider:

U.S. Fish and Wildlife Service Open Data

Resource Class:

Imagery and Web services

Temporal Coverage:

Last modified 2024-06-25

Date Issued:

2024-05-22

Place:

United States

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:

Imagery

Language:

English

Date Added:

2024-06-25