| Abstract: | Jackson Lake, located in Grand Teton National Park, Wyoming, is in an area of seismic instability. There is a possibility of flooding in the Snake River downstream from Jackson Lake Dam in the event of a severe earthquake. Hypothetical floods were routed 38 miles (61 kilometers) downstream from the dam for three cases: (1) Instantaneous destruction of the dam outlet structure, (2) instantaneous destruction of the entire dam, and (3) for waves overtopping the dam without failure of the dam. In each case, a full reservoir was assumed. Hydrographs for outflow from the reservoir for the two cases of dam failure were developed utilizing an accelerated discharge due to the travel of a negative wave through the reservoir, and Muskingum storage routing. For the case of waves overtopping the dam, a 10-foot (3-meter) wave was assumed to be propagated from the upstream end of the reservori. A multiple-linearization technique was used to route the flow through the reach. The model was calibrated from U.S. Geological Survey streamflow records. Most extensive flooding and largest water velocities would occur if the entire dam were destroyed; floods for the other two cases were smaller. An inundation map was prepared from channel conveyance curves and profiles of the water surface. (Woodard-USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 27331 |
| Citation Author: | Glass, W. R.; Keefer, T. N.; Rankl, J. G. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | - |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 32 p., 1 fold. leaf of plates :ill., maps ;26 cm. issued in envelope 30 x 24 cm. -- |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Dept. of the Interior, Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 76-77 |
| Citation Search Results Text: | Hydrologic effects of hypothetical earthquake-caused floods below Jackson Lake, northwestern Wyoming; 1976; WRI; 76-77; Glass, W. R.; Keefer, T. N.; Rankl, J. G. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 1976 |
| Type: | citation/reference |
| Text: | Hydrologic effects of hypothetical earthquake-caused floods below Jackson Lake, northwestern Wyoming; 1976; WRI; 76-77; Glass, W. R.; Keefer, T. N.; Rankl, J. G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Dept. of the Interior, Geological Survey, |
