Found 20 datasets matching filters. (clear all filters)
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This dataset represents centroids of lakes, reservoirs, and wetlands listed as "impaired" in Iowa's Section 305(b) Water Quality Assessment and the 303(d) Impaired Waters Report. Together, these...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 06, 2026 at 06:57 AM -
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: 6 | Catalog Last Checked: May 05, 2026 at 10:39 PM -
Water bodies captured in 1999. Contract NCPC 93-02. This document describes the planimetric map production for the 350 tiles located in Washington DC and the surrounding states of MD and VA....
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 10:36 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, 2025 at 04:52 AM -
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: 2 | Catalog Last Checked: August 02, 2025 at 04:46 AM -
There are multiple systems for mapping waterbodies within the conterminous United States. Prominent among them are the "High Resolution" and "Version 2" editions of the National Hydrography...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: May 05, 2026 at 09:40 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Although the State of Maryland has no natural lakes - it has an abundance of created lakes and ponds...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: August 02, 2025 at 05:16 AM -
305b Assessed River, Lake, Estuary 2024: Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: February 28, 2026 at 03:47 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: 0 | Catalog Last Checked: August 02, 2025 at 05:33 AM -
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: 0 | Catalog Last Checked: August 02, 2025 at 04:25 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: 0 | Catalog Last Checked: February 28, 2026 at 03:48 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: 0 | Catalog Last Checked: August 02, 2025 at 04:48 AM -
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: 0 | Catalog Last Checked: July 28, 2025 at 11:07 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: 0 | Catalog Last Checked: February 28, 2026 at 03:47 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: 0 | Catalog Last Checked: February 28, 2026 at 03:48 PM -
305b Assessed River, Lake, Estuary 2024: Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: February 28, 2026 at 03:47 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: 0 | Catalog Last Checked: February 28, 2026 at 03:47 PM -
305b Assessed River, Lake, Estuary 2024: Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: February 28, 2026 at 03:48 PM -
305b Assessed River, Lake, Estuary 2024: Connecticut 305b Assessed River 2024 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with Sections...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: February 28, 2026 at 03:47 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: 0 | Catalog Last Checked: August 02, 2025 at 04:51 AM
