Search datasets
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These data provide measures of stream chemical, physical, and biological conditions and are to be used in watershed restoration and protection programs throughout Maryland.
Search relevance: 150.47 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
These data provide measures of stream chemical, physical, and biological conditions and are to be used in watershed restoration and protection programs throughout Maryland.
Search relevance: 150.47 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The MBSS assesses the ecological condition of 1st-4th order streams statwide (1995 - 2014). Biological - ...
Search relevance: 128.72 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 06:49 PM -
This is the biological stream survey monitoring dataset collected by the National Capital Region Network (NCRN) Inventory and Monitoring Program from 2004 through 2022. Biological stream surveys...
Search relevance: 70.12 | Views last month: 4 | Catalog Last Checked: November 12, 2026 at 02:55 AM -
This data release contains habitat survey data (quantitative and qualitative) and biological assemblage data (periphyton, macroinvertebrate, and fish) collected among 8 stream sites within the...
Search relevance: 65.02 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 09:45 PM -
This Data Release provides stream temperature data (13 sites) and fish community data (3 sites) in Big Hunting Creek, Maryland. Data were collected during summer baseflow conditions in 2023. This...
Search relevance: 59.37 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 07:52 PM -
Data are from 1,000 river and stream sites across the conterminous US where consistent biological, chemical, physical and watershed data were gathered. The sites were selected using a probability...
Search relevance: 56.92 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 06:52 PM -
The Stream Conditions of Chester County Biological Monitoring Network was established by the U.S. Geological Survey and the Chester County Water Resources Authority in 1969....
Search relevance: 53.88 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 07:50 PM -
Water, bed sediment, and invertebrate tissue were sampled in streams from Butte to near Missoula, Montana, as part of a long-term monitoring program in the upper Clark Fork Basin. The sampling...
Search relevance: 53.03 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:17 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The sample sites are color coded according to the Benthic Index of Biotic Integrity (BIBI) scores....
Search relevance: 49.52 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:51 PM -
Stream N and other water chemistry measurements originate from three national-scale, randomized, unequally weighted probability surveys of the U.S. EPA's National Rivers and Streams Assessment...
Search relevance: 47.00 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:59 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The stream reaches are color coded according to the Combined Index of Biotic Integrity (CIBI) scores of...
Search relevance: 45.54 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
These data depict the locations (only) of all Brook Trout Genetics study sites in the park. Great Smoky Mountains National Park (GRSM) is committed to monitoring ecological and evolutionary...
Search relevance: 45.17 | Views last month: 0 | Catalog Last Checked: November 11, 2026 at 03:06 AM -
This data provides an overview of native amphibian restoration sites in the Sierra Nevada. Following High Mountain Lakes surveys, fish were manually removed at some high elevation lake sites....
Search relevance: 43.50 | Views last month: 0 | Catalog Last Checked: October 24, 2026 at 08:45 PM -
This data provides an overview of native amphibian restoration sites in the Sierra Nevada. Following High Mountain Lakes surveys, fish were manually removed at some high elevation lake sites....
Search relevance: 42.32 | Views last month: 9 | Catalog Last Checked: October 24, 2026 at 08:48 PM
