Well NA04001207ADC1 EW-31U (EW31U)
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Co-located Well(s):
NA04001207ADC2 EW-31C (EW31C)

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Well Information Table
Common Well ID	NA04001207ADC1 EW-31U
USBR Well ID	EW31U
USGS Well ID	374345105414001
GSDNP Well Name	374345105414001
USGS Station Name	NA04001207ADC1 EW-31U
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	NA04001207ADC1 EW-31U
USBR TRS	NA04001207ADC1
USGS TRS 1	NA04001207ADC1 EW-31U
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)	7558.63
SRTM Ground Elevation (ft NAVD88)	7562.65
Total Depth (ft)	45.00
USBR Total Depth (ft)	45
USGS Hole Depth (ft)	150.00
USGS Well Depth (ft)	40.00
Model Layer	1
Model Layer Source	Dunes Layer
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
Aquifer Information
Aquifer Type	Unconfined
Aquifer Type Source	EW_AQFR
USGS Hydrologic Unit	San Luis
USGS Data Available	Water-level (GW.LEV)
Water-level Count	296
Water-level Date Range	09/11/1982 thru 08/15/2009
Water-level Sources	RGWCD:0, USBR:272, USGS:27, HRS:0, Divide Study:0

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Water-level Data

1970 to Present

No Water-level data for well 374345105414001

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Measurement Date	Depth to Water (ft)	Elevation (ft NAVD88)	Data Source(s)
09/11/1982	4.90	7553.56	USBR
11/04/1982	4.30	7554.16	USBR
11/30/1982	4.20	7554.26	USBR
12/03/1982	4.27	7554.19	USGS
12/21/1982	4.40	7554.06	USBR
01/18/1983	4.40	7554.06	USBR
02/15/1983	4.10	7554.36	USBR
09/20/1983	5.30	7553.16	USBR
10/19/1983	5.40	7553.06	USBR
11/16/1983	5.40	7553.06	USBR
07/11/1984	4.50	7553.96	USBR
08/30/1984	4.72	7553.74	USBR
09/30/1984	4.91	7553.55	USBR
10/17/1984	4.30	7554.16	USBR
11/20/1984	3.81	7554.65	USBR
12/19/1984	3.61	7554.85	USBR
01/18/1985	3.57	7554.89	USBR
02/19/1985	3.60	7554.86	USBR
02/18/1986	3.42	7555.04	USBR
11/25/1986	3.20	7555.26	USBR
06/16/1987	4.74	7553.72	USBR
07/28/1987	6.10	7552.36	USBR
08/24/1987	6.50	7551.96	USBR
09/16/1987	6.21	7552.25	USBR
10/20/1987	5.81	7552.65	USBR
11/18/1987	5.45	7553.01	USBR
12/16/1987	5.33	7553.13	USBR
01/20/1988	5.19	7553.27	USBR
02/23/1988	5.01	7553.45	USBR
03/16/1988	4.51	7553.95	USBR
05/25/1988	4.21	7554.25	USBR
06/15/1988	4.83	7553.63	USBR
07/15/1988	5.48	7552.98	USBR
08/15/1988	6.15	7552.31	USBR
10/26/1988	5.73	7552.73	USBR
12/29/1988	4.93	7553.53	USBR
02/15/1989	4.79	7553.67	USBR
03/15/1989	3.73	7554.73	USBR
04/15/1989	3.34	7555.12	USBR
05/15/1989	3.62	7554.84	USBR
06/15/1989	3.98	7554.48	USBR
07/15/1989	4.53	7553.93	USBR
10/15/1989	4.15	7554.31	USBR
11/15/1989	4.40	7554.06	USBR
12/15/1989	4.64	7553.82	USBR
01/15/1990	4.63	7553.83	USBR
02/15/1990	4.35	7554.11	USBR
03/15/1990	2.89	7555.57	USBR
04/15/1990	3.07	7555.39	USBR
05/15/1990	3.03	7555.43	USBR
06/15/1990	4.13	7554.33	USBR
07/15/1990	4.82	7553.64	USBR
08/15/1990	5.61	7552.85	USBR
09/15/1990	6.29	7552.17	USBR
10/15/1990	4.45	7554.01	USBR
11/15/1990	3.87	7554.59	USBR
12/15/1990	3.59	7554.87	USBR
01/15/1991	4.09	7554.37	USBR
02/15/1991	4.04	7554.42	USBR
03/15/1991	3.28	7555.18	USBR
04/15/1991	3.24	7555.22	USBR
05/15/1991	3.72	7554.74	USBR
06/15/1991	4.15	7554.31	USBR
07/15/1991	5.10	7553.36	USBR
08/15/1991	5.12	7553.34	USBR
09/15/1991	5.54	7552.92	USBR
10/10/1991	4.95	7553.51	USBR
11/15/1991	3.28	7555.18	USBR
12/15/1991	2.68	7555.78	USBR
08/15/1992	5.71	7552.75	USBR
09/15/1992	5.62	7552.84	USBR
10/15/1992	5.48	7552.98	USBR
11/15/1992	5.10	7553.36	USBR
12/15/1992	4.99	7553.47	USBR
01/15/1993	5.00	7553.46	USBR
02/15/1993	4.62	7553.84	USBR
03/15/1993	3.36	7555.10	USBR
04/15/1993	3.45	7555.01	USBR
05/15/1993	4.10	7554.36	USBR
06/15/1993	4.54	7553.92	USBR
07/15/1993	5.20	7553.26	USBR
08/15/1993	5.56	7552.90	USBR
09/15/1993	4.75	7553.71	USBR
10/15/1993	4.96	7553.50	USBR
11/15/1993	4.41	7554.05	USBR
12/15/1993	4.30	7554.16	USBR
01/15/1994	4.25	7554.21	USBR
02/15/1994	2.74	7555.72	USBR
03/15/1994	2.28	7556.18	USBR
04/15/1994	2.79	7555.67	USBR
05/15/1994	3.01	7555.45	USBR
06/15/1994	4.54	7553.92	USBR
07/15/1994	5.12	7553.34	USBR
08/15/1994	5.72	7552.74	USBR
09/15/1994	4.53	7553.93	USBR
10/15/1994	3.93	7554.53	USBR
11/15/1994	3.94	7554.52	USGS
11/15/1994	4.04	7554.42	USBR
12/15/1994	3.99	7554.47	USBR
01/15/1995	3.47	7554.99	USBR
02/15/1995	3.04	7555.42	USBR
03/15/1995	2.93	7555.53	USBR
04/21/1995	2.65	7555.81	USBR
04/21/1995	2.55	7555.91	USGS
05/15/1995	3.50	7554.96	USBR
06/15/1995	3.53	7554.93	USBR
07/19/1995	4.14	7554.32	USBR
07/19/1995	4.04	7554.42	USGS
08/15/1995	4.74	7553.72	USBR
09/15/1995	4.47	7553.99	USBR
10/15/1995	4.06	7554.40	USBR
11/01/1995	3.87	7554.59	USBR
11/01/1995	3.77	7554.69	USGS
11/15/1995	3.76	7554.70	USBR
12/15/1995	3.56	7554.90	USBR
01/11/1996	3.34	7555.12	USGS
01/11/1996	3.44	7555.02	USBR
02/15/1996	2.75	7555.71	USGS
02/15/1996	2.85	7555.61	USBR
03/15/1996	2.68	7555.78	USBR
04/25/1996	3.27	7555.19	USBR
04/25/1996	3.17	7555.29	USGS
06/06/1996	4.48	7553.98	USBR
07/09/1996	4.72	7553.74	USBR
07/31/1996	5.32	7553.14	USBR
07/31/1996	5.22	7553.24	USGS
09/05/1996	5.87	7552.59	USBR
11/05/1996	4.54	7553.92	USBR
11/26/1996	4.29	7554.17	USBR
01/15/1997	3.93	7554.53	USBR
03/07/1997	3.22	7555.24	USBR
03/07/1997	3.12	7555.34	USGS
04/25/1997	3.36	7555.10	USBR
06/03/1997	3.95	7554.51	USBR
08/28/1997	4.45	7554.01	USBR
08/28/1997	4.35	7554.11	USGS
09/04/1997	4.62	7553.84	USBR
10/15/1997	5.33	7553.13	USBR
11/15/1997	4.11	7554.35	USBR
12/12/1997	3.55	7554.91	USBR
02/02/1998	3.20	7555.26	USBR
04/14/1998	2.94	7555.52	USGS
04/14/1998	3.04	7555.42	USBR
05/06/1998	3.76	7554.70	USBR
05/19/1998	4.16	7554.30	USBR
05/21/1998	4.24	7554.22	USBR
06/22/1998	4.61	7553.85	USBR
08/27/1998	4.72	7553.74	USBR
10/08/1998	5.09	7553.37	USGS
10/08/1998	5.19	7553.27	USBR
10/14/1998	5.21	7553.25	USBR
01/21/1999	4.14	7554.32	USBR
03/01/1999	3.72	7554.74	USBR
05/19/1999	3.87	7554.59	USBR
09/21/1999	4.83	7553.63	USGS
09/21/1999	4.93	7553.53	USBR
01/12/2000	4.37	7554.09	USBR
01/20/2000	4.12	7554.34	USBR
04/25/2000	3.76	7554.70	USGS
04/25/2000	3.86	7554.60	USBR
05/19/2000	4.34	7554.12	USBR
06/14/2000	4.65	7553.81	USBR
07/15/2000	4.91	7553.55	USBR
08/15/2000	5.79	7552.67	USBR
09/08/2000	5.95	7552.51	USBR
10/15/2000	5.44	7553.02	USBR
11/02/2000	5.21	7553.25	USGS
11/27/2000	5.02	7553.44	USBR
12/15/2000	4.88	7553.58	USBR
01/15/2001	4.64	7553.82	USBR
02/15/2001	4.76	7553.70	USBR
03/15/2001	3.49	7554.97	USBR
03/29/2001	3.33	7555.13	USBR
04/16/2001	3.88	7554.58	USBR
05/01/2001	4.12	7554.34	USGS,USBR
05/15/2001	4.00	7554.46	USBR
06/15/2001	4.95	7553.51	USBR
07/19/2001	5.65	7552.81	USBR
08/15/2001	5.94	7552.52	USBR
09/15/2001	6.09	7552.37	USBR
10/04/2001	6.07	7552.39	USBR
10/25/2001	5.67	7552.79	USGS,USBR
11/15/2001	5.43	7553.03	USBR
12/03/2001	5.30	7553.16	USBR
12/15/2001	5.22	7553.24	USBR
01/15/2002	5.10	7553.36	USBR
02/15/2002	4.58	7553.88	USBR
03/15/2002	4.31	7554.15	USBR
04/15/2002	4.43	7554.03	USBR
05/15/2002	4.82	7553.64	USGS
05/15/2002	4.90	7553.56	USBR
06/15/2002	5.61	7552.85	USBR
07/15/2002	6.22	7552.24	USBR
08/15/2002	6.76	7551.70	USBR
09/07/2002	7.01	7551.45	USBR
09/15/2002	6.76	7551.70	USBR
10/15/2002	6.12	7552.34	USBR
11/14/2002	5.73	7552.73	USGS
11/15/2002	5.70	7552.76	USBR
12/15/2002	5.50	7552.96	USBR
01/15/2003	5.30	7553.16	USBR
02/15/2003	5.11	7553.35	USBR
03/15/2003	4.88	7553.58	USBR
04/01/2003	4.50	7553.96	USBR
04/15/2003	4.53	7553.93	USBR
04/16/2003	4.48	7553.98	USGS
05/15/2003	4.81	7553.65	USBR
06/15/2003	5.36	7553.10	USBR
07/15/2003	6.37	7552.09	USBR
08/15/2003	7.07	7551.39	USBR
08/26/2003	7.20	7551.26	USBR
09/15/2003	6.86	7551.60	USBR
10/07/2003	6.76	7551.70	USGS
10/15/2003	6.66	7551.80	USBR
11/15/2003	6.12	7552.34	USBR
12/15/2003	5.72	7552.74	USBR
01/15/2004	5.50	7552.96	USGS,USBR
02/15/2004	5.26	7553.20	USBR
03/15/2004	4.91	7553.55	USBR
04/10/2004	4.70	7553.76	USBR
04/13/2004	4.78	7553.68	USGS
04/15/2004	4.82	7553.64	USBR
05/15/2004	5.14	7553.32	USBR
06/15/2004	5.98	7552.48	USBR
07/15/2004	6.66	7551.80	USBR
07/21/2004	6.53	7551.93	USGS
08/15/2004	7.07	7551.39	USBR
09/15/2004	7.48	7550.98	USBR
09/17/2004	7.49	7550.97	USBR
10/15/2004	6.61	7551.85	USBR
10/26/2004	6.38	7552.08	USGS
11/15/2004	6.09	7552.37	USBR
12/15/2004	5.76	7552.70	USBR
01/15/2005	5.50	7552.96	USBR
02/15/2005	5.21	7553.25	USBR
03/15/2005	4.82	7553.64	USBR
04/15/2005	4.68	7553.78	USBR
05/04/2005	4.41	7554.05	USBR
05/15/2005	4.74	7553.72	USBR
06/15/2005	5.56	7552.90	USBR
07/15/2005	6.44	7552.02	USBR
07/27/2005	6.65	7551.81	USGS
08/15/2005	6.90	7551.56	USBR
09/15/2005	7.24	7551.22	USBR
09/20/2005	7.31	7551.15	USBR
10/15/2005	6.59	7551.87	USBR
11/15/2005	6.06	7552.40	USBR
12/15/2005	5.76	7552.70	USBR
01/05/2006	5.53	7552.93	USBR
01/15/2006	5.47	7552.99	USBR
02/15/2006	5.26	7553.20	USBR
03/15/2006	5.00	7553.46	USBR
04/15/2006	4.87	7553.59	USBR
04/21/2006	4.89	7553.57	USBR
05/15/2006	5.14	7553.32	USBR
06/15/2006	5.97	7552.49	USBR
07/15/2006	6.18	7552.28	USBR
07/24/2006	6.41	7552.05	USBR
08/15/2006	5.83	7552.63	USBR
09/08/2006	6.08	7552.38	USBR
09/15/2006	6.18	7552.28	USBR
10/15/2006	5.58	7552.88	USBR
11/15/2006	5.19	7553.27	USBR
12/15/2006	4.99	7553.47	USBR
01/15/2007	4.90	7553.56	USBR
02/15/2007	4.62	7553.84	USBR
03/15/2007	4.14	7554.32	USBR
04/15/2007	3.82	7554.64	USBR
05/15/2007	4.30	7554.16	USBR
06/15/2007	4.84	7553.62	USBR
07/15/2007	5.71	7552.75	USBR
08/15/2007	6.23	7552.23	USBR
09/15/2007	6.81	7551.65	USBR
10/15/2007	6.24	7552.22	USBR
11/15/2007	5.80	7552.66	USBR
12/15/2007	5.41	7553.05	USBR
01/15/2008	4.82	7553.64	USBR
02/15/2008	4.73	7553.73	USBR
03/15/2008	4.08	7554.38	USBR
04/15/2008	4.35	7554.11	USBR
05/15/2008	4.72	7553.74	USBR
06/15/2008	5.37	7553.09	USBR
07/15/2008	6.01	7552.45	USBR
08/15/2008	6.53	7551.93	USBR
09/15/2008	6.86	7551.60	USBR
10/15/2008	6.59	7551.87	USBR
11/15/2008	5.99	7552.47	USBR
12/15/2008	5.67	7552.79	USBR
01/15/2009	5.48	7552.98	USBR
02/15/2009	5.14	7553.32	USBR
03/15/2009	4.89	7553.57	USBR
04/15/2009	4.53	7553.93	USBR
05/15/2009	4.86	7553.60	USBR
06/15/2009	5.15	7553.31	USBR
07/15/2009	4.45	7554.01	USBR
08/15/2009	5.73	7552.73	USBR

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Well NA04001207ADC1 EW-31U (EW31U)Unconfined

View Digital Orthophoto Quadrangle for this area

Water-level Data

1970 to Present

No Water-level data for well 374345105414001

Well NA04001207ADC1 EW-31U (EW31U)
Unconfined