Scientific Investigations Report 2007–5044
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5044
Table 9. Simulated 10-year average water budget for subregions of the Spokane Valley-Rathdrum Prairie aquifer.
[Values are in cubic foot per second. Value in italic indicates flow component is specified; value in bold indicates flow component is not specified]
| Calibrated model | Alternative model | |||||||
|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | ||||
| northern Rathdrum Prairie |
Inflow | recharge from precipitation | 77 | 77 | 77 | 77 | 77 | 77 |
| tributary basins | 63 | 63 | 63 | 63 | 108 | 63 | ||
| Lake Pend Oreille | 67 | 107 | 65 | 64 | 95 | 75 | ||
| Spirit Lake | 55 | 55 | 55 | 55 | 55 | 55 | ||
| Twin Lakes | 40 | 40 | 40 | 40 | 40 | 40 | ||
| Outflow | net water use | -6 | -6 | -6 | -6 | -6 | -6 | |
| West Channel | -206 | -235 | -204 | -204 | -259 | -212 | ||
| Ramsey Channel | -75 | -87 | -75 | -75 | -96 | -78 | ||
| Chilco Channel | -5 | -5 | -5 | -5 | -5 | -5 | ||
| Decrease in Storage | -9 | -9 | -9 | -9 | -9 | -9 | ||
| southern Rathdrum Prairie |
Inflow | West Channel | 206 | 235 | 204 | 204 | 259 | 212 |
| Ramsey Channel | 75 | 87 | 75 | 75 | 96 | 78 | ||
| Chilco Channel | 5 | 5 | 5 | 5 | 5 | 5 | ||
| recharge from precipitation | 74 | 74 | 74 | 74 | 74 | 74 | ||
| tributary basins | 20 | 20 | 20 | 20 | 20 | 20 | ||
| Hayden Lake | 70 | 70 | 70 | 70 | 70 | 70 | ||
| Fernan Lake | 15 | 15 | 15 | 15 | 15 | 15 | ||
| Coeur d’Alene Lake | 138 | 29 | 175 | 132 | 104 | 137 | ||
| Spokane River | 274 | 287 | 276 | 272 | 265 | 273 | ||
| Outflow | net water use | -57 | -57 | -57 | -57 | -57 | -57 | |
| eastern Spokane Valley | -823 | -769 | -861 | -813 | -855 | -830 | ||
| Decrease in Storage | 4 | 4 | 4 | 4 | 5 | 4 | ||
| eastern Spokane Valley |
Inflow | southern Rathdrum Prairie | 823 | 769 | 861 | 813 | 855 | 830 |
| recharge from precipitation | 30 | 30 | 30 | 30 | 30 | 30 | ||
| tributary basins | 16 | 16 | 16 | 16 | 16 | 16 | ||
| Hauser Lake | 20 | 20 | 20 | 20 | 20 | 20 | ||
| Newman Lake | 23 | 23 | 23 | 23 | 23 | 23 | ||
| Liberty Lake | 6 | 6 | 6 | 6 | 6 | 6 | ||
| Spokane River | 377 | 378 | 378 | 377 | 377 | 378 | ||
| Outflow | net water use | -16 | -16 | -16 | -16 | -16 | -16 | |
| Spokane area | -1,280 | -1,227 | -1,319 | -1,270 | -1,312 | -1,288 | ||
| Decrease in Storage | 2 | 2 | 2 | 2 | 2 | 2 | ||
| Spokane area |
Inflow | eastern Spokane Valley | 1,280 | 1,227 | 1,319 | 1,270 | 1,312 | 1,288 |
| recharge from precipitation | 30 | 30 | 30 | 30 | 30 | 30 | ||
| tributary basins | 4 | 4 | 4 | 4 | 4 | 4 | ||
| Outflow | net water use | -133 | -133 | -133 | -133 | -133 | -133 | |
| Spokane River | -623 | -616 | -620 | -618 | -625 | -628 | ||
| Hillyard Trough | -293 | -293 | -349 | -293 | -293 | -293 | ||
| Western Arm | -264 | -218 | -249 | -260 | -295 | -268 | ||
| Decrease in Storage | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Western Arm |
Inflow | Spokane area | 264 | 218 | 249 | 260 | 295 | 268 |
| recharge from precipitation | 7 | 7 | 7 | 7 | 7 | 7 | ||
| tributary basins | 16 | 16 | 16 | 16 | 16 | 16 | ||
| Outflow | net water use | -3 | -3 | -3 | -3 | -3 | -3 | |
| Spokane River | -283 | -238 | -269 | -280 | -314 | -287 | ||
| Decrease in Storage | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Hillyard Trough |
Inflow | Spokane area | 293 | 293 | 349 | 293 | -293 | 293 |
| recharge from precipitation | 14 | 14 | 14 | 14 | 14 | 14 | ||
| tributary basins | 3 | 3 | 3 | 3 | 3 | 3 | ||
| Outflow | net water use | -28 | -28 | -28 | -28 | -28 | -28 | |
| Little Spokane River Arm | -254 | -254 | -254 | -254 | -254 | -254 | ||
| Lower Unit | -27 | -27 | -84 | -27 | -27 | -27 | ||
| Decrease in Storage | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Little Spokane River Arm |
Inflow | Hillyard Trough | 254 | 254 | 254 | 254 | 254 | 254 |
| recharge from precipitation | 5 | 5 | 5 | 5 | 5 | 5 | ||
| tributary basins | 6 | 6 | 6 | 6 | 6 | 6 | ||
| Outflow | net water use | 0 | 0 | 0 | 0 | 0 | 0 | |
| Little Spokane River | -257 | -257 | -257 | -257 | -257 | -257 | ||
| Spokane River/Long Lake | -8 | -8 | -8 | -8 | -8 | -8 | ||
| Decrease in Storage | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Lower Unit |
Inflow | Hillyard Trough | 27 | 27 | 84 | 27 | 27 | 27 |
| Outflow | net water use | 0 | 0 | 0 | 0 | 0 | 0 | |
| Long Lake | -27 | -27 | -84 | -27 | -27 | -27 | ||
| Decrease in Storage | 0 | 0 | 0 | 0 | 0 | 0 | ||
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