Open-File Report 2012–1026
AbstractA hydrologic and landscape database was developed by the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, for the Cache River and White River National Wildlife Refuges and their contributing watersheds in Arkansas, Missouri, and Oklahoma. The database is composed of a set of ASCII files, Microsoft Access® files, Microsoft Excel® files, an Environmental Systems Research Institute (ESRI) ArcGIS® geodatabase, ESRI ArcGRID® raster datasets, and an ESRI ArcReader® published map. The database was developed as an assessment and evaluation tool to use in examining refuge-specific hydrologic patterns and trends as related to water availability for refuge ecosystems, habitats, and target species; and includes hydrologic time-series data, statistics, and hydroecological metrics that can be used to assess refuge hydrologic conditions and the availability of aquatic and riparian habitat. Landscape data that describe the refuge physiographic setting and the locations of hydrologic-data collection stations are also included in the database. Categories of landscape data include land cover, soil hydrologic characteristics, physiographic features, geographic and hydrographic boundaries, hydrographic features, regional runoff estimates, and gaging-station locations. The database geographic extent covers three hydrologic subregions—the Lower Mississippi–St Francis (0802), the Upper White (1101), and the Lower Arkansas (1111)—within which human activities, climatic variation, and hydrologic processes can potentially affect the hydrologic regime of the refuges and adjacent areas. Database construction has been automated to facilitate periodic updates with new data. The database report (1) serves as a user guide for the database, (2) describes the data-collection, data-reduction, and data-analysis methods used to construct the database, (3) provides a statistical and graphical description of the database, and (4) provides detailed information on the development of analytical techniques designed to assess water availability for ecological needs. |
First posted June 25, 2012
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Buell, G.R., Wehmeyer, L.L., and Calhoun, D.L., 2012, Hydrologic and landscape database for the Cache and White River National Wildlife Refuges and contributing watersheds in Arkansas, Missouri, and Oklahoma: U.S. Geological Survey Open-File Report 2012–1026, 79 p., available online at http://pubs.usgs.gov/of/2012/1026/.
Abstract
Introduction
Purpose and Scope
Physiographic Setting
Refuge Setting
Cache River National Wildlife Refuge
White River National Wildlife Refuge
Environmental Issues
Methods Used for Database Construction
Database Geographic Extent
Hydrologic Data Sources and Data-Retrieval Procedures
Landscape Data Sources
Database Design and Directory Structure
Hydrologic and Landscape Data Reduction
Database Summary Data
Hydrologic Statistical Summary
Hydrologic Graphical Summary
Indicators of Hydrologic Alteration Interstation Comparison
Landscape GIS Data Layers
Summary
References Cited