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Caballo Reservoir 2007 Sedimentation Survey.
| 题名： | Caballo Reservoir 2007 Sedimentation Survey. |
| 作者： | ferrari, r. l. |
| 关键词： | dams, surveys, global positioning systems, contour area, topography, hydrography, water storage, irrigation, flood control |
| 摘要： | The Bureau of Reclamation (Reclamation) surveyed Caballo Reservoir in September 2007 to compute a present storage-elevation relationship (area-capacity tables). The underwater survey was conducted at the project's reservoir elevation 4,135.0 feet. The project datum is 43.3 feet lower than National Geodetic Vertical Datum of 1929 (NGVD29) and 45.5 feet lower than North American Vertical Datum of 1988 (NAVD88). The underwater survey used sonic depth recording equipment interfaced with real-time kinematic (RTK) global positioning system (GPS) that provided continuous sounding positions throughout the underwater portion of the reservoir covered by the survey vessel. The above-water topography was obtained by standard land surveying methods, using RTK GPS to measure portions of the 32 sedimentation range lines surveyed. As of September 2007, at reservoir water surface elevation 4,182.0 feet, the surface area was 11,532 acres with a total capacity of 324,934 acre-feet. Since the reservoir's 1938 initial filling, 21,802 acre-feet of sediment have accumulated in Caballo Reservoir. Since the 1999 reservoir survey, 1,738 acre-feet of sediment have been trapped. The average annual rate of sediment accumulation since 1938 is 312.8 acre-feet and since 1999 it is 206.9 acre-feet. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0825；50p |
| 报告类型： | 科技报告 |
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