| Abstract: | This vector data set delineates the approximate boundary of the Eagle River watershed valley-fill aquifer (ERWVFA). This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle River Water and Sanitation District, the Town of Eagle, the Town of Gypsum, and the Upper Eagle Regional Water Authority. This project was designed to evaluate potential land-development effects on groundwater and surface-water resources so that informed land-use and water management decisions can be made. The boundary of the ERWVFA was developed by combining information from two data sources. The first data source was a 1:250,000-scale geologic map of the Leadville quadrangle developed by Day and others (1999). The location of Quaternary sediments was used as a first approximation of the ERWVFA. The boundary of the ERWVFA was further refined by overlaying the geologic map with Digital Raster Graphic (DRG) scanned images of 1:24,000 topographic maps (U.S. Geological Survey, 2001). Where appropriate, the boundary of the ERWVFA was remapped to correspond with the edge of the valley-fill aquifer marked by an abrupt change in topography at the edge of the valley floor throughout the Eagle River watershed. The boundary of the ERWVFA more closely resembles a hydrogeomorphic region presented by Rupert (2003, p. 8) because it is based upon general geographic extents of geologic materials and not on an actual aquifer location as would be determined through a rigorous hydrogeologic investigation. |
| Genre: | USGS Numbered Series |
| ProdID: | 97768 |
| Citation Author: | Rupert, Michael G.; Plummer, L. Niel |
| Citation Contributing Office: | Colorado Water Science Center |
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| Citation Edition: | - |
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| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 039.717408 |
| Citation LatS: | 039.545337 |
| Citation LonE: | -106.27557 |
| Citation LonW: | -107.11553 |
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| Citation No Pagination: | Y |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Available online only |
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| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Data Series |
| Citation Series Code: | DS |
| Citation Series Number: | 458 |
| Citation Search Results Text: | Boundary of the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007; 2009; DS; 458; Rupert, Michael G.; Plummer, L. Niel |
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| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Boundary of the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007; 2009; DS; 458; Rupert, Michael G.; Plummer, L. Niel |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/ds/458/ |
| Date Other: | Tue, 18 Aug 2009 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
