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National Capital Region Network Stream Water Quality Data Package - cumulative through 2025

Published by National Park Service | Department of the Interior | Catalog Last Checked: May 26, 2026 at 03:40 PM | Dataset Last Updated: March 30, 2026 at 12:00 AM
This dataset represents the perennial nontidal water quality and quantity monitoring from 2005-2025 collected by the National Capital Region Network (NCRN) Inventory and Monitoring Program. Measurements were collected at 54 sites in the National Capital Region, with 37 extant and 17 retired sites as of 2025. In 2025, measurements were collected from each extant site every-other-month but site visit frequency varied through time.

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