Techniques and Methods 6-A19
U.S. GEOLOGICAL SURVEY
Techniques and Methods 6-A19
Table 3. Hydraulic properties and other selected variables used in the Layer-Property Flow (LPF) and the Unsaturated-Zone Flow (UZF1) Packages for test simulation 1.
[Abbreviations: m, meter; m/d, meter per day; m3, cubic meter]
| Variable | Value |
|---|---|
| Variables assigned to the Layer-Property Flow (LPF) Package | |
| Horizontal hydraulic conductivity of aquifer (m/d) | 0.005 to 0.3 |
| Vertical hydraulic conductivity of aquifer (m/d) | 0.005 to 0.3 |
| Specific storage (per m of aquifer) | 5 ×10-7 |
| Specific yield (m3 of water per m3 of aquifer) | 0.05 to 0.25 |
| Variables assigned to the Unsaturated-Zone Flow (UZF1) Package | |
| Vertical hydraulic conductivity of the unsaturated zone beneath land surface (m/d) | 0.005 to 0.3 |
| Brooks-Corey exponent for unsaturated zone beneath land surface (unitless) | 4.0 |
| Saturated water content of unsaturated zone beneath land surface (m3 of water per m3 of unsaturated zone) | 0.3 |
| Initial water content of unsaturated zone beneath land surface (m3 of water per m3 of unsaturated zone) | 0.2 |
| Steady-state infiltration rate (m/d) | 0.0004 to 0.00104 |
| Evapotranspiration extinction depth (m) | 2.5 |
| Evapotranspiration extinction water content (m3 of water per m3 of unsaturated zone) | 0.1002 |
| Variables assigned to the Streamflow-Routing (SFR2) Package | |
| Hydraulic conductivity of streambed (m/d) | 0.3 |
| Streambed thickness (m) | 1.0 |
| Vertical hydraulic conductivity of unsaturated zone beneath streams (m/d) | 0.3 |
| Brooks-Corey exponent for unsaturated zone beneath streams (unitless) | 3.5 |
| Saturated water content of unsaturated zone beneath streams (m3 of water per m3 of unsaturated zone) | 0.3 |
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Department of the Interior | U.S. Geological
Survey
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