Name: River Nutrient Regions Standards WIDs, Minnesota
Display Field: reach_name
Type: Feature Layer
Geometry Type: esriGeometryPolyline
Description: These data indicate the River Eutrophication (Nutrient) Region standard assignment for stream water units as of the publication date. The assignment indicates which standard applies for that particular reach. For more information on the eutrophication standards, see: https://www.pca.state.mn.us/water/water-quality-standards-river-eutrophication-and-total-suspended-solids These streams are a subset and enhancement of the 1:24,000 scale National Hydrography Dataset (NHD). In cases where the NHD does not include a stream reach that MPCA has assessed, a feature is added by MPCA.
Description: These data show the river nutrient regions in the State of Minnesota. Water quality standards for river eutrophication are applied to stream water units based on their relationship to these regions, though the nature of that relationship may not be as direct as a spatial intersect. Users should NOT rely solely on this dataset to determine the standard applicable to a specific waterbody. The standards, as applied, incorporate a downstream distance decay allowance. Thus, a stream flowing from the north to the central region retains the north region's standard as water moves into the central region for a distance determined by MPCA surface water scientists. In addition, there area several places in the state with reach specific criteria. For a detailed view of the standards applicable to a specific reach, please see the related dataset: river_nutrient_standards_wids