Scientific Investigations Report 2008–5162
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5162
Version 1.1, December 2008
Table 5. Model parameters and their calibrated values, in order of sensitivity for original model, South Lake Tahoe, California and Nevada.
[Abbreviations: acre-ft/yr, acre-foot per year; ft/d, foot per day; ft, foot]
Parameter name | Model run parameter estimates | ||||
---|---|---|---|---|---|
Original | Lower stage |
Raised stage |
Clay layer present |
Horizontal hydraulic conductivity (4 ft/d) |
|
Mountain-front recharge (acre-ft/yr) | 306 | 322 | 205 | 278 | 495 |
Channel recharge (acre-ft/yr) | 160 | 163 | 177 | 137 | 338 |
Mountain-length recharge (acre-ft/yr) | 146 | 159 | 28 | 141 | 157 |
Basin vertical hydraulic conductivity (ft/d) | 0.0024 | 0.0024 | 0.0024 | 0.0024 | 0.0024 |
Areal recharge (acre-ft/yr) | 5 | 5 | 5 | 5 | 5 |
Aquifer vertical hydraulic conductivity (ft/d) | 0.33 | 0.32 | 0.98 | 0.33 | 0.36 |
Storm-drain discharge (acre-ft/yr) | 56 | 39 | 94 | 48 | 80 |
Discharge to Lake Tahoe (acre-ft/yr) | 256 | 289 | 116 | 236 | 421 |
Model root mean square error (RMS) (ft) | 2.55 | 2.67 | 1.31 | 2.64 | 2.54 |