Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado Data release for Surficial Geology of the Northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado
The San Luis Valley and associated underlying basin of south-central Colorado and north-central New Mexico is the largest structural and hydrologic basin of the Rio Grande Rift and fluvial system. The surrounding San Juan and Sangre de Cristo Mountains reveal evidence of widespread volcanism and transtensional tectonism beginning in the Oligocene and continuing to the present, as seen in...
Bedload Intake Efficiency: Comparison of measurements obtained using # bedload samplers in a flume Bedload Intake Efficiency: Comparison of measurements obtained using # bedload samplers in a flume
Bedload and ancillary data herein were used to calculate and compare the bedload-trapping efficiencies of four types of pressure-difference bedload samplers as part of episodic, sediment-recirculating flume tests. The U.S. Geological Survey, in concert with the Federal Interagency Sedimentation Project (FISP), conducted the tests from January through March 2006 at the St. Anthony Falls...
Modeling accumulated surface runoff and water availability for aquifer storage and recovery in the MENA region from 1984-2015 Modeling accumulated surface runoff and water availability for aquifer storage and recovery in the MENA region from 1984-2015
The Middle East and North Africa (MENA) region is the most water-scarce region with only two percent of the global average annual rainfall, hence underground aquifers are the major source of water. The need to improve water productivity and increase aquifer storage and recovery (ASR) is driving the efforts for this acceleration of aquifer storage and recovery project. The objective was...
Cladophora biomass and supporting data collected in the Great Lakes, 2020 (ver. 2, May 2023) Cladophora biomass and supporting data collected in the Great Lakes, 2020 (ver. 2, May 2023)
This dataset records Cladophora and associated submerged aquatic vegetation (SAV) biomass collected during the growing season of 2020 at stations located along the U.S. shoreline of Lakes Michigan, Huron, and Erie. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data include: - measurements of Secchi disk depth and water...
Topobathymetric Model of the Strait of Juan de Fuca, 1891 to 2016 Topobathymetric Model of the Strait of Juan de Fuca, 1891 to 2016
To support the modeling of storm-induced flooding, the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for the Strait of Juan de Fuca, which is located at the outlet of the Salish Sea. The international boundary between Canada and the northwestern part of the...
Provisional peak-streamflow information during March 8-17 at selected USGS gaging stations on the islands of Kauai, Oahu, Molokai, and Maui in the State of Hawaii Provisional peak-streamflow information during March 8-17 at selected USGS gaging stations on the islands of Kauai, Oahu, Molokai, and Maui in the State of Hawaii
These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the...