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NHD Major Rivers, Major Rivers and Creeks, Major Lakes and Reservoirs
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
MO 2016 Section 303d Listed Impaired Rivers And Streams Shapefiles
This data set contains Missouri's 2016 Section 303(d) Listed Waters - Rivers and Streams and is a list of certain impaired waters in the State of Missouri. The list is a... -
Impaired Streams 2008
Under Section 303(d) of the Clean Water Act, states are required from "time to time" to submit a list of waters for which effluent limits will not be sufficient to meet all... -
i12 CalSIMII InflowData
This dataset represents locations of major inflows to the CA Central Valley. All but the two southernmost locations are associated with CalSim II. CalSim II is an operations... -
Salt Water Limit
Salt Water Limit is a 1:24000-scale, line feature-based layer that depicts the approximate salt water limits of watercourses and embayments in coastal Connecticut. It is... -
Wild and Scenic Rivers, California State Designations Only, 2020
California Public Resources Code, Chapter 1.4. California Wild and Scenic Rivers Act, Section 5093.50. It is the policy of the State of California that certain rivers which... -
Salt Water Limit
Salt Water Limit is a 1:24000-scale, line feature-based layer that depicts the approximate salt water limits of watercourses and embayments in coastal Connecticut. It is... -
Wild and Scenic Rivers, California State Designations Only, 2020
California Public Resources Code, Chapter 1.4. California Wild and Scenic Rivers Act, Section 5093.50. It is the policy of the State of California that certain rivers which... -
i12 CalSIMII InflowData
This dataset represents locations of major inflows to the CA Central Valley. All but the two southernmost locations are associated with CalSim II. CalSim II is an operations... -
Impaired Streams 2010
Under Section 303(d) of the Clean Water Act, states are required from "time to time" to submit a list of waters for which effluent limits will not be sufficient to meet all... -
Impaired Streams 2014
This dataset contains line work representing streams and rivers listed as "impaired" in Iowa's 2014 Section 305(b) Water Quality Assessment and the 303(d) Impaired Waters... -
i12 CalSIMII InflowData
This dataset represents locations of major inflows to the CA Central Valley. All but the two southernmost locations are associated with CalSim II. CalSim II is an operations... -
Alaska Hydrography 1:63,360
DNR, LRIS, GIS Services Unit (SGU) maintains a hydrography coverage consisting of data that was digitized by SGU staff, primarily from 1:63,360 USGS quadrangles photo-revised by... -
i12 CalSIMII InflowData
This dataset represents locations of major inflows to the CA Central Valley. All but the two southernmost locations are associated with CalSim II. CalSim II is an operations... -
Salt Water Limit
Salt Water Limit is a 1:24000-scale, line feature-based layer that depicts the approximate salt water limits of watercourses and embayments in coastal Connecticut. It is... -
National Hydrography Dataset (NHD)
The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information... -
River Scientist Regions
The Regions show who to contact for the physical assessment, restoration and protection of rivers and their corridors. The regional scientists provide the following services:... -
KY Major Rivers 1100k scale
Kentucky Major Rivers (1:100k scale) -
US Rivers
U.S. Rivers (Generalized) represents the major rivers within the United States.