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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: 159.30 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 06:49 PM -
The Chesapeake Bay is greatly affected by freshwater flows from streams and rivers draining its watershed. Variations in the amount and timing of streamflow can change water temperature, salinity,...
Search relevance: 34.45 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:34 PM -
This dataset represents the estimated surface water runoff within individual, local NHDPlusV2 catchments and upstream, contributing watersheds. Attributes of the landscape layer were calculated...
Search relevance: 32.37 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:11 PM -
This dataset represents the estimated surface water runoff within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies. Catchment boundaries in LakeCat are defined in one...
Search relevance: 29.56 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:10 PM -
Parking lots may be a significant source of pollution. Oil, sediments, and heavy metals may accumulate on their surface, then be flushed into rivers, streams, and lakes via rainfall. At present no...
Search relevance: 23.46 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:45 PM -
The Wet Meadows and Fens geodatabase of Yosemite National Park (YOSE) was produced over a three month period (December 2013 through February 2014). The resulting products are intended to: (1)...
Search relevance: 22.42 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 07:22 PM -
The Wet Meadows and Fens Geodatabase of Sequoia and Kings Canyon National Parks (SEKI) was produced over a three month period (late February through early May 2013). The resulting products are...
Search relevance: 20.58 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 07:22 PM -
Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of...
Search relevance: 8.63 | Views last month: 0 | Catalog Last Checked: July 28, 2025 at 07:13 PM -
Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of...
Search relevance: 8.59 | Views last month: 0 | Catalog Last Checked: July 28, 2025 at 07:10 PM -
Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metadata for CAL-FIRE cnty18_1), State of...
Search relevance: 7.62 | Views last month: 0 | Catalog Last Checked: July 28, 2025 at 07:11 PM
