Well Data (0)
| Upper Aquifer |
| Upper Confining Unit |
| Lower Aquifer |
| Lower Confining Unit |
| Wanapum Basalt |
| Latah |
| Grande Ronde Basalt |
| Bedrock |
| SVRP Aquifer |
| Multiple |
|
| Not Applicable |
|
| Unknown |
|
| |
Little Spokane Seepage Run Measurement Locations (1)
Nitrate Data (2)
| 0.00 - 2.50 |
| 2.51 - 5.00 |
| 5.01 - 7.50 |
| 7.51 - 10.00 |
| 10.01 - 15.00 |
| 15.01 - 37.60 |
Little Spokane River Seepage Reaches (3)
| Losing Reach |
| Gaining Reach |
Top of bedrock contours (4)
| 1,200 |
| 1,400 |
| 1,600 |
| 1,800 |
| 2,000 |
| 2,200 |
| 2,400 |
| 2,600 |
| 2,800 |
USGS Geologic Cross Sections (5)
WRIA 55 Streams & Rivers (6)
Critical Aquifer Recharge Area (17)
| high susceptibility to contamination |
| moderate susceptibility to contamination |
| low susceptibility to contamination |
Lakes (7)
WRIA 55 Watershed Boundary (8)
Estimated Well Depth (9)
| Less than 100 |
| 101 - 150 |
| 151 - 200 |
| 201 - 250 |
| 251 - 300 |
| 301 - 350 |
| 351 - 400 |
| 401 - 450 |
| Greater than 451 |
Estimated Well Yield (10)
| 0.5 - 2.5 |
| 2.51 - 5.0 |
| 5.01 - 7.5 |
| 7.51 - 10.0 |
| 10.01 - 15.0 |
| 15.01 - 20.0 |
| 20.01 - 25.0 |
| 25.01 - 50.0 |
| 50.01 - 100.0 |
Surficial Geology (11)
| Qs: Recent non-glacial sediment, peat |
| Qmw: Mass-wasting deposits |
| Qe: Eolian deposits, loess and dune sand |
| Qgf: Fine-grained glacial deposits |
| Qgc: Coarse-grained glacial deposits |
| Qgt: Glacial Till |
| Mw: Wanapum Basalt |
| Mgr: Grande Ronde Basalt |
| Ml: Latah Formation |
| TKg: Intrusive igneous rocks, most granite |
| pCm: Metamorphic rocks; quartzite, schist, gneiss |
| water |
Hydrogeology (12)
| Bedrock |
| Basalt |
| Upper aquifer |
| Upper confining unit |
Basalt aquifer (13)
| Less than 100 ft |
| 101 ft to 200 ft |
| Greater than 200 ft |
Upper sand & gravel aquifer (14)
|
| Less than 100 ft |
|
| 101 ft to 200 ft |
|
| 201 ft to 300 ft |
| Greater than 300 ft |
Lower sand & gravel aquifer (15)
|
| Less than 50 ft |
|
| 51 ft to 100 ft |
|
| Greater than 100 ft |
Primary Water Bearing Units (16)
| Columbia River Basalt |
| Spokane Valley Rathdrum Prairie Aquifer |
| Sand & gravel |
| Bedrock |
| Clay & silt |
| Lower sand |
| Sand & gravel overlying basalt |
|
