Well NA04001207ADC2 EW-31C (EW31C) | ||
| Co-located Well(s):
 NA04001207ADC1 EW-31U (EW31U)  | 
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 Home | Well Information | Hydrograph | Water Level Data Table 
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Index Map showing model domain. Green shaded area Click on map  | 
| Well Information Table | |
|---|---|
| Common Well ID | NA04001207ADC2 EW-31C | 
| USBR Well ID | EW31C | 
| USGS Well ID | 374345105414002 | 
| GSDNP Well Name | 374345105414002 | 
| USGS Station Name | NA04001207ADC2 EW-31C | 
| USGS Construction Date | 09/04/1982 | 
| USGS Site Type | Well | 
| USGS Site Use Information | Observation | 
| USGS Groundwater Use Information | Unknown | 
| Data Source(s) | USGS, USBR | 
| Location Data | |
| TRS | NA04001207ADC2 EW-31C | 
| USBR TRS | NA04001207ADC2 | 
| USGS TRS 1 | NA04001207ADC2 EW-31C | 
| Longitude/Latitude (NAD83) | -105.69493192 , 37.72927722 | 
| Longitude/Latitude Data Source | USBOR EW well locations | 
| USGS Longitude/Latitude (NAD83) | -105.6950168 , 37.72916710 | 
| USBR Longitude/Latitude (NAD27) | -105.694359529708 , 37.7292767843257 | 
| Easting, Northing RGDSS-NAD83 (US ft) | 193976.60 , 266970.80 | 
| USGS Topography | Valley flat | 
| USGS County | Alamosa County | 
| USGS Map Name | MEDANO RANCH | 
| USGS Map Scale | 24000 | 
| Elevation and Depth Data | |
| Ground Elevation (ft NAVD88) | 7558.46 | 
| Elevation Data Source | USBOR EW well database | 
| USBR Ground Elevation (ft NGVD29) | 7554.3 | 
| USGS Ground Elevation (ft NGVD29) | 7554.30 | 
| 1/3-Arc Second NED Ground Elevation (ft NAVD88) | 7558.75 | 
| 1-Arc Second NED Ground Elevation (ft NAVD88) | 7557.20 | 
| SRTM Ground Elevation (ft NAVD88) | 7562.65 | 
| Total Depth (ft) | 139.00 | 
| USBR Total Depth (ft) | 139 | 
| USGS Hole Depth (ft) | 150.00 | 
| USGS Well Depth (ft) | 135.00 | 
| Model Layer | 2 | 
| Model Layer Source | Aquifer Type | 
| Depth of Bottom of Layer 1 | 142 | 
| Depth of Bottom of Layer 2 | 464 | 
| Depth of Bottom of Layer 3 | 1530 | 
| Depth of Bottom of Layer 4 | 3487 | 
| Additional Well Information | Logs, Construction | 
| Aquifer Information | |
| Aquifer Type | Confined | 
| Aquifer Type Source | EW_AQFR | 
| USGS Hydrologic Unit | San Luis | 
| USGS Data Available | Water-level (GW.LEV) | 
| Water-level Database Information | |
| Water-level Count | 475 | 
| Water-level Date Range | 09/11/1982 thru 02/15/2025 | 
| Monitored within the last 18 months | Yes, most recently on 02/15/2025 | 
| Depth-to-Water Range (ft) | -1.69 to 3.60 | 
| Water Table Elevation Range (ft NAVD88) | 7554.86 to 7560.15 | 
| Water-Level-Source:Number-of-Measurements | USGS:26 USBR:466 |