Paper No. 99055 of the Journal of the American Water Resources Association.Discussions are open until June 1,2001.
HYDROLOGIC IMPLICATIONS OF GREATER GROUND-WATER RECHARGE TO LAS VEGAS VALLEY, NEVADA1
Article first published online: 8 JUN 2007
JAWRA Journal of the American Water Resources Association
Volume 36, Issue 5, pages 1133–1148, October 2000
How to Cite
Donovan, D. J. and Katzer, T. (2000), HYDROLOGIC IMPLICATIONS OF GREATER GROUND-WATER RECHARGE TO LAS VEGAS VALLEY, NEVADA. JAWRA Journal of the American Water Resources Association, 36: 1133–1148. doi: 10.1111/j.1752-1688.2000.tb05716.x
- Issue published online: 8 JUN 2007
- Article first published online: 8 JUN 2007
- ground-water hydrogeology;
- ground-water modeling;
- water management;
- natural recharge;
- Las Vegas Valley;
ABSTRACT: Published estimates of natural recharge in Las Vegas Valley range between 21,000 and 35,000 acre-feet per year. This study examined the underlying assumptions of previous investigations and evaluated the altitude-precipitation relationships. Period-of-record averages from high altitude precipitation gages established in the 1940s through the 1990s, were used to determine strong local altitude-precipitation relationships that indicate new total precipitation and natural recharge amounts and a new spatial distribution of that recharge. This investigation calculated about 51,000 acre-feet per year of natural recharge in the Las Vegas Hydrographic Basin, with an additional 6,000 acre-feet per year from areas tributary to Las Vegas Valley, for a total of 57,000 acre-feet per year. The total amount of natural recharge is greater than estimates from earlier investigations and is consistent with a companion study of natural discharge, which estimated 53,000 acre-feet per year of outflow. The hydrologic implications of greater recharge in Las Vegas Valley infer a more accurate ground-water budget and a better understanding of ground-water recharge that will be represented in a ground-water model. Thus model based ground-water management scenarios will more realistically access impacts to the ground-water system.