U.S. Detailed Streets clipped to the Tehachapi Study Area

This dataset is clipped to the Tehachapi Study Area. U.S. and Canada Detailed Streets represents streets, highways, roads with and without limited access, secondary and connecting roads, local and rural roads, roads with special characteristics, access ramps, and ferries within the United States and Canada. This data set contains road network features such as arterial classification, speed, and direction of travel. It contains address ranges for all addressable features with addresses.

Tags: addresses, connecting roads, ferries, geocoding, highways, All tags... interstates, limited-access roads, line, local roads, location, major roads, one-ways, road feature codes, routing, secondary roads, speeds, streets, transportation, Fewer tags

E2NHDPlusV2_us: Database of Ancillary Hydrologic Attributes and Modified Routing for NHDPlus Version 2.1 Flowlines

The National Hydrography Dataset Plus, Version 2 (NHDPlusV2) is an attribute rich, digital hydrologic network for the Conterminous U.S. developed by the U.S. Environmental Protection Agency (EPA) and U.S. Geological Survey (USGS). SPAtially Referenced Regressions On Watershed attributes (SPARROW), is a process-based/statistical model that relies on a digital hydrologic network, like NHDPlusV2, in order to establish spatial relations between monitored contaminant loads, contaminant sources, and other watershed characteristics. The USGS National Water Quality Assessment (NAWQA) project adopted the medium-resolution NHDPlusV2 network as the primary framework supporting SPARROW modeling, and has become a unifying system...

Categories: Data; Tags: Conterminous United States, Hydrology, NHDPlus, SPARROW, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Resources, biota, hydrography, hydrologic network, routing, Fewer tags

Database of modified routing for NHDPlus version 2.1 flowlines: ENHDPlusV2_us

This database (ENHDPlusV2_us) contains a topologically reconditioned (enhanced) version of the U.S. Environmental Protection Agency (USEPA) and the U.S. Geological Survey (USGS) NHDPlus Version 2.1 (NHDPlusV2) flowline network. The comma separated file included in this release contains routing and stream connection information, with the intention of improving accuracy and networking capabilities. The enhancements described here include corrections to inconsistencies in network and routing information, filling-in missing attribute values of associated characteristics, and revisions to diverted flow routing. The database is intended for routing purposes only; no cartographic changes were made to the original NHDPlusv2...

Categories: Data; Tags: Conterminous United States, Geography, Hydrologic network, NHDPlus, National Water Quality Program, All tags... USGS Science Data Catalog (SDC), Water Quality, Water Resources, routing, Fewer tags