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Filters Date Types (for Date Range) Contacts U.S. Geological Survey Megan K LaPeyre Jonathan Kleinman Sophie Williams Cooperative Research Units More... Categories Data (1) Tag Types Theme (2) Place (1) Harvest Set (2) USGS Scientific Topic Keyword (2) Tag Schemes none (1) Geographic Names Information System (GNIS) (1) ISO 19115 Topic Category (2) Marine Realms Information Bank (MRIB) keywords (1) USGS Thesaurus (2) Coastal and Marine Ecological Classification Standard (1) None (1) View Results as: JSON ATOM CSV

MODFLOW-NWT model used in simulation of groundwater availability in reaches 3 and 4 of the Washita River aquifer, southern Oklahoma, 1980–2017 (ver. 1.1, April 2024) The U.S. Geological Survey (USGS), in cooperation with the Oklahoma Water Resources Board (OWRB), constructed a finite-difference numerical groundwater-flow model of the Washita River aquifer by using MODFLOW-2005 (Harbaugh, 2005) with the Newton formulation solver (MODFLOW-NWT). The 1973 Oklahoma Groundwater Law requires that the OWRB conduct hydrologic investigations of the State’s aquifers to determine the maximum annual yield (MAY) for each groundwater basin. The MAY is defined as the total amount of fresh groundwater that can be annually withdrawn while allowing a minimum 20-year life of that groundwater basin. For alluvium and terrace groundwater basins, the life requirement is satisfied if, after 20 years... Tags: Caddo County, Garvin County, Grady County, Groundwater Model, InlandWaters, All tags... MODFLOW, MODFLOW-NWT, McClain County, Murray County, Oklahoma, PEST, PEST++, Python, Soil Water Balance, USGS Science Data Catalog (SDC), Washita River, Water Resources, environment, geoscientificInformation, groundwater, groundwater and surface-water interaction, inlandWaters, modeling, usgsgroundwatermodel, Fewer tags Information supporting a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico Information was gathered to support a cumulative effects assessment of restoration in barrier island and shoreline systems of the north central Gulf of Mexico. Information includes: 1) results from two literature searches to help guide the development of a conceptual model of a barrier island and shoreline system and identify drivers and stressors important to that system, and 2) an accounting of restoration projects and descriptive information to document the distribution of Deepwater Horizon-funded restoration projects within the study area and guide the identification of potential effects on focal resources. Categories: Data; Tags: Barrier Island, Ecology, USGS Science Data Catalog (SDC), cumulative effects, dune restoration, All tags... ecosystem resilience, ecosystem restoration, environment, erosion control and restoration, natural resource management, oceans, shore, wetland restoration, Fewer tags