| Well Information Table |
|---|
| Common Well ID | NA03901201AAB1 EW-23U |
| USBR Well ID | EW23U |
| USGS Well ID | 373947105361901 |
| GSDNP Well Name | 373947105361901 |
| USGS Station Name | NA03901201AAB1 EW-23U |
| USGS Construction Date | 06/24/1980 |
| USGS Site Type | Well |
| USGS Site Use Information | Observation |
| USGS Groundwater Use Information | Unused |
| Data Source(s) | USGS, USBR |
| Location Data |
|---|
| TRS | NA03901201AAB1 EW-23U |
| USBR TRS | NA03901201AAB1 |
| USGS TRS 1 | NA03901201AAB1 EW-23U |
| Longitude/Latitude (NAD83) | -105.60611123 , 37.66300392 |
| Longitude/Latitude Data Source | USBOR EW well locations |
| USGS Longitude/Latitude (NAD83) | -105.6058478 , 37.66305780 |
| USBR Longitude/Latitude (NAD27) | -105.605541186296 , 37.6630016663817 |
| Easting, Northing RGDSS-NAD83 (US ft) | 219671.83 , 242851.19 |
| USGS Topography | Valley flat |
| USGS County | Alamosa County |
| USGS Map Name | ZAPATA RANCH |
| USGS Map Scale | 24000 |
| Elevation and Depth Data |
|---|
| Ground Elevation (ft NAVD88) | 7687.69 |
| Elevation Data Source | USBOR EW well database |
| USBR Ground Elevation (ft NGVD29) | 7683.5 |
| USGS Ground Elevation (ft NGVD29) | 7683.50 |
| 1/3-Arc Second NED Ground Elevation (ft NAVD88) | 7691.21 |
| 1-Arc Second NED Ground Elevation (ft NAVD88) | 7689.71 |
| SRTM Ground Elevation (ft NAVD88) | 7686.40 |
| Total Depth (ft) | 78.00 |
| USBR Total Depth (ft) | 78 |
| USGS Hole Depth (ft) | 83.00 |
| USGS Well Depth (ft) | 78.00 |
| Model Layer | 1 |
| Model Layer Source | Aquifer Type |
| Depth of Bottom of Layer 1 | 248 |
| Depth of Bottom of Layer 2 | 659 |
| Depth of Bottom of Layer 3 | 1205 |
| Depth of Bottom of Layer 4 | 2561 |
| Additional Well Information | Logs, Construction |
| Aquifer Information |
|---|
| Aquifer Type | Unconfined |
| Aquifer Type Source | EW_AQFR |
| USGS Hydrologic Unit | San Luis |
| USGS Data Available | Water-level (GW.LEV) |
| Water-level Database Information |
|---|
| Water-level Count | 751 |
| Water-level Date Range | 09/04/1980 thru 02/15/2025 |
| Monitored within the last 18 months | Yes, most recently on 02/15/2025 |
| Depth-to-Water Range (ft) | 21.77 to 28.92 |
| Water Table Elevation Range (ft NAVD88) | 7658.77 to 7665.92 |
| Water-Level-Source:Number-of-Measurements | USGS:461 USBR:426 |
