Hydrologist Emeritus
National Geospatial Program
Email:
ahrea@usgs.gov
Office Phone:
208-207-0811
ORCID:
0000-0002-0406-9596
Location
Supervisor:
Vicki Lukas
|
National Hydrography Dataset (NHD) stream permanence classifications (SPC; perennial, intermittent, and ephemeral) are widely used for data visualization and applied science, and have implications for resource policy and management. NHD SPC were assigned using a combination of topographic field surveys and interviews with local residents. However, previous studies indicate that non‐NHD, in situ streamflow observations (NNO) frequently disagree with NHD SPC. We hypothesized that differences in annual climate conditions between map creation years and the years NNO were collected contributed to disagreement between NNO and NHD SPC. We compared NHD SPC to 10,055 NNO (classified as “wet” or “dry”) collected in the Pacific...
|
Abstract To aid in parameterization of mechanistic, statistical, and machine learning models of hydrologic systems in the contiguous United States (CONUS), flow-conditioned parameter grids (FCPGs) have been generated describing upstream basin mean elevation, slope, land cover class, latitude, and 30-year climatologies of mean total annual precipitation, minimum daily air temperature, and maximum daily air temperature. Additional datasets of upstream basin area and binary stream presence-absence are provided to help validate queries against the flow-conditioned data. These data are provided as virtual raster tile (vrt) mosaics of cloud optimized GeoTIFFs to allow point queries of the data (see Distribution Information)...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: CPG,
Daymet,
FCPG,
Flow-Conditioned Parameter Grids,
Hydrologic, All tags...
Hydrology,
Land Cover,
NHD,
NLCD,
National Hydrography Dataset,
USGS,
USGS Science Data Catalog (SDC),
United States,
climatologyMeteorologyAtmosphere,
environment,
geoscientificInformation,
inlandWaters,
water,
water - inland, Fewer tags
|
The National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD) are used to portray surface water on The National Map. The NHD represents the drainage network with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages. An important use of the NHD is the analysis of surface-water systems. This analysis is possible because many types of location information can be linked to the NHD, such as flow-volume, velocity, temperature, water chemistry, pollution control classifications, aquatic species habitat, recreation designations, or water rights. Such network-linked data is typically maintained by various organizations at Federal, State, and local levels, as well as research,...
Tags: Area event,
Catchment based indexing,
Catchment indexing,
Gaging station,
HEM, All tags...
Hydro linked data,
Hydrographically linked data,
Hydrologically linked data,
Line event,
Linear event,
Linear referenced,
Linear referencing,
Linked data,
NHD,
NHDPLus,
National Hydrography Dataset,
Point event,
Polygon event,
Polygonal event,
Stream gages, Fewer tags
|
|
