18 datasets found for "Surface Hydrography"
-
Federal
EnviroAtlas - 303(d) Impairments by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset depicts the total length of stream or river flowlines that have impairments submitted to the EPA by states under section 303(d) of the Clean... -
Federal
National Hydrography Dataset Plus - NHDPlus
U.S. Environmental Protection Agency —
This high-level metadata data document will be supplemented with detailed regional metadata at a later date. The NHDPlusV2 is an integrated suite of application-ready... -
Federal
The StreamCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Anthropogenic Barrier Dataset (NABD)
U.S. Environmental Protection Agency —
This dataset represents the dam density and storage volumes within individual, local NHDPlusV2 catchments and upstream, contributing watersheds based on the National... -
Federal
EnviroAtlas - Watershed Index Online Hydrologically Connected Zone Mask for the Conterminous United States
U.S. Environmental Protection Agency —
The Hydrologically Connected Zone (HCZ) Mask was determined using grid analysis to combine surface water features in the United States from three datasets: First, the... -
Federal
Office of Water Linked Data
U.S. Environmental Protection Agency —
The Office of Water Linked Data (OWLD) dataset stores EPA Water program information indexed to several National Hydrography Dataset frameworks. Indexing may be... -
Federal
EnviroAtlas - Watershed Index Online Water Mask for the Conterminous United States
U.S. Environmental Protection Agency —
This data layer represents all surface water features in the United States. This grid was created by combining water features identified in two sources, the 2019... -
Federal
The StreamCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Land Cover Database - Impervious Surfaces
U.S. Environmental Protection Agency —
This dataset represents data derived from the NLCD dataset and the National Hydrography Dataset version 2.1(NHDPlusV2) (see Data Sources for links to NHDPlusV2 data... -
Federal
The LakeCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Anthropogenic Barrier Dataset
U.S. Environmental Protection Agency —
This dataset represents the dam density and storage volumes within individual local and accumulated upstream catchments for NHDPlusV2 Waterbodies based on the... -
Federal
EnviroAtlas - Watershed Index Online Riparian Zone Mask for the Conterminous United States
U.S. Environmental Protection Agency —
The Riparian Zone Mask represents surface water in the United States and its estimated riparian zone. These areas were determined using grid analysis of an... -
Federal
EnviroAtlas - Predicted drinking water nitrate violations by 12-Digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This map displays predicted probability of a 12-digit Hydrologic Unit (HUC12) being at risk of violating the drinking water nitrate standard. Risk is defined as there... -
Federal
The StreamCat Dataset: Accumulated Attributes for NHDPlusV2 (Version 2.1) Catchments for the Conterminous United States: National Land Cover Database
U.S. Environmental Protection Agency —
This dataset represents data derived from the NLCD dataset and the National Hydrography Dataset version 2.1(NHDPlusV2) (see Data Sources for links to NHDPlusV2 data... -
Federal
Lane_etal_WhatRemains
U.S. Environmental Protection Agency —
Clean Water Act (CWA) coverage extends to certain wetlands, including those with a continuous surface connection to relatively permanent tributaries. However, limited... -
Federal
EnviroAtlas - 2016 Riparian Land Cover Proportions by 12-Digit HUC for Alaska
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as forest, forest including woody wetlands, and natural land cover that occurs... -
Federal
EnviroAtlas - Waterbody area by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset depicts the total waterbody area by 12-digit HUC for the Conterminous US from the US Geological Survey's high-resolution National Hydrography... -
Federal
EnviroAtlas - 2016 Riparian Tree Canopy Cover by 12-digit HUC for the Conterminous United States
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as tree canopy cover using the National Land Cover Database 2016 USFS Tree Canopy... -
Federal
EnviroAtlas - 2016 Riparian Tree Canopy Cover by 12-digit HUC for Hawaii
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as tree canopy cover using the National Land Cover Database 2016 USFS Tree Canopy... -
Federal
EnviroAtlas - 2016 Riparian Tree Canopy Cover by 12-digit HUC for Puerto Rico and the US Virgin Islands
U.S. Environmental Protection Agency —
This EnviroAtlas dataset represents the percentage of land area that is classified as tree canopy cover using the National Land Cover Database 2016 USFS Tree Canopy... -
Federal
Datasets for manuscript: A Graph-Based Modeling Framework for Tracing Hydrological Pollutant Transport in Surface Waters
U.S. Environmental Protection Agency —
Hydrology Graphs This repository contains the code for the manuscript "A Graph Formulation for Tracing Hydrological Pollutant Transport in Surface Waters." There are...
18 datasets found for "Surface Hydrography"