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The 3D Hydrography Program (3DHP) data is an integrated, National, 3D-enabled hydrologic dataset derived from the USGS 3D Elevation Program (3DEP) data. For areas where Elevation-derived...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: August 01, 2026 at 04:32 AM -
Connecticut 303(d) Impaired Waters 2024 is a subset of Connecticut 305(b) Assessed Waters 2024. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody...
Search relevance: 1.00 | Views last month: 7 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
This map data layer represents the linear hydrology features for the City of Bloomington, Indiana. This includes creeks, streams, lake shorelines, open channels, and detention pond boundary line features.
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 11:56 PM -
Connecticut 303(d) Impaired Waters 2024 is a subset of Connecticut 305(b) Assessed Waters 2024. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody...
Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:28 PM -
Connecticut 303(d) Impaired Waters 2024 is a subset of Connecticut 305(b) Assessed Waters 2024. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 05:27 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Line features of rivers and streams (detailed shape) in Maryland. Last Updated: Feature Service Layer...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 11:09 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The intent of this dataset is for it to be used to produce maps and provide a spatial reference for all...
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
Although the State of Maryland has no natural lakes, it has an abundance of created lakes and ponds that are used for wildlife habitat, recreation, water supply, and other reasons. This digital...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 11:11 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This dataset provides the Tier II catchments delineated for the most downstream Tier II segment. This...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
NOTE: In 2013, the California Department of Fish and Game (CDFG, DFG) was renamed to California Department of Fish and Widlife (CDFW). This dataset is an update of California lake, reservoir, and...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: July 31, 2026 at 08:49 PM -
Connecticut 303(d) Impaired Waters 2024 is a subset of Connecticut 305(b) Assessed Waters 2024. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:29 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The digital segmented network based on watershed boundaries - ERF1-2 - includes enhancements to the...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 11:10 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Polygon boundaries of lakes (generalized shape) in Maryland. Last Updated: Feature Service Layer Link:...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 11:08 PM -
The Stream Condition Index (SCI) is a grade card scoring District waterbodies. Learn about your local streams using the 'Stream Explorer' or dive deeper into the data DOEE collects to study these...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 03, 2026 at 02:42 AM -
The digital segmented network based on watershed boundaries, ERF1-2, includes enhancements to the U.S. Environmental Protection Agency's River Reach File 1 (RF1) (USEPA, 1996; DeWald and others,...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 11:11 PM -
The digital segmented network based on watershed boundaries, ERF1-2, includes enhancements to the U.S. Environmental Protection Agency's River Reach File 1 (RF1) (USEPA, 1996; DeWald and others,...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 11:10 PM
