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Found 2077 dataset(s) matching "Hydrography".
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<div style='text-align:Left;'><div><p><span>Curb Line. The dataset contains polylines representing planimetric curbs, created as part of the DC Geographic Information System (DC GIS) for the D.C....
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IMPORTANT NOTE: This dataset includes spatial locations where streamflow permanence observations (continuous flow, discontinuous flow, and dry) were recorded using the FLOwPER (FLOw PERmanence)...
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This data set represents the estimated area of level 3 ecological landscape regions (ecoregions), as defined by Omernik (1987), compiled for every catchment of NHDPlus for the conterminous...
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For State agencies and other water-resources managers, determining which waterbodies to allocate limited funds for protection and restoration while also maximizing cost benefit is challenging....
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This data release has a workflow, data, and results of an analysis of the coverage, resolution, and representation of variables related to public interests in streamflow information by the USGS...
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This data release is focused on the analysis of surface water concentration data associated with 12 elements of concern from three hydrologic basins. Data is analyzed with respect to: a) reporting...
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<div style='text-align:Left;'><div><p><span>Sidewalks and stairs. The dataset contains polygons representing planimetric sidewalks and stairs, created as part of the DC Geographic Information...
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This arc and point data set contains streamflow measurement sites and reaches indicating streamflow gain or loss under base-flow conditions along the Republican River and tributaries in Nebraska...
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Since November 1995, the CARIACO Ocean Time Series program has been studying the relationship between surface biogeochemical processes and the vertical fluxes of carbon and nutrients in a...
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To assess the distribution, frequency, and global extent of riverine hypoxia, we compiled 118 million paired dissolved oxygen (DO) and water temperature measurements from 125,158 unique locations...
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Roads. The dataset contains polygons representing planimetric roads, created as part of the DC Geographic Information System (DC GIS) for the D.C....
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This hybrid medium-resolution national hydrography dataset with river corridor attributes (NHD-RC) for the conterminous United States (CONUS) was created by merging lentic and lotic attributes...
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<div style='text-align:Left;'><div><div><p><span>Breaklines (2008). The dataset contains breakline features derived photogrammetrically to support 2’ contours. Masspoints and breaklines were...
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Basin-wide analysis of potential to improve tributary habitats in the Columbia River basin through restoration of habitat-forming processes. Identification of geomorphological target conditions...
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Recreation Areas. The dataset contains polygons representingrecreation areas, created as part of the DC Geographic Information System (DC GIS) for...
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This data release contains fractional intersectional weights used to crosswalk data from the National Water Use Program to the National Integrated Water Availability Assessment (IWAAs) projects....
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Curb Line. The dataset contains polygons representing planimetric curbs, created as part of the DC Geographic Information System (DC GIS) for the...
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Stream acidification is an increasingly serious threat to the survival of brook trout. Streams in GRSM naturally become more acidic at higher elevations. However, research shows that areas in the...
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Represents spatial predictions of biological condition at unsampled streams and lakes across the counterminous US. Also includes spatial predictions channel dimensions of unsamples streams. This...
