Well NA04001106DAD EW-71C (EW71C)
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Co-located Well(s):
NA04001106DAD3 EW-71U (EW71U)

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Well Information Table
Common Well ID	NA04001106DAD EW-71C
USBR Well ID	EW71C
USGS Well ID	374428105480401
GSDNP Well Name	374428105480401
USGS Station Name	NA04001106DAD EW-71C
USGS Construction Date	01/04/1978
USGS Site Type	Well
USGS Site Use Information	Observation
USGS Groundwater Use Information	Unknown
Data Source(s)	USGS, USBR
Location Data
TRS	NA04001106DAD EW-71C
USBR TRS	NA04001106DAD
USGS TRS 1	NA04001106DAD EW-71C
Longitude/Latitude (NAD83)	-105.80290614 , 37.74160509
Longitude/Latitude Data Source	USBOR EW well locations
USGS Longitude/Latitude (NAD83)	-105.8016861 , 37.74111097
USBR Longitude/Latitude (NAD27)	-105.802331117320 , 37.7416052415759
Easting, Northing RGDSS-NAD83 (US ft)	162765.67 , 271485.77
USGS Topography	Valley flat
USGS County	Alamosa County
USGS Map Name	HOOPER EAST
USGS Map Scale	24000
Elevation and Depth Data
Ground Elevation (ft NAVD88)	7535.24
Elevation Data Source	USBOR EW Well database
USBR Ground Elevation (ft NGVD29)	7531.3
USGS Ground Elevation (ft NGVD29)	7531.90
1/3-Arc Second NED Ground Elevation (ft NAVD88)	7535.19
1-Arc Second NED Ground Elevation (ft NAVD88)	7535.39
SRTM Ground Elevation (ft NAVD88)	7542.96
Total Depth (ft)	87.00
USBR Total Depth (ft)	87
USGS Hole Depth (ft)	87.00
USGS Well Depth (ft)	87.00
Model Layer	1
Model Layer Source	Dunes Layer
Depth of Bottom of Layer 1	102
Depth of Bottom of Layer 2	309
Depth of Bottom of Layer 3	1502
Depth of Bottom of Layer 4	2612
Aquifer Information
Aquifer Type	Confined
Aquifer Type Source	EW_AQFR
USGS Hydrologic Unit	San Luis
USGS Data Available	Water-level (GW.LEV)
Water-level Count	411
Water-level Date Range	05/10/1978 thru 03/15/2007
Water-level Sources	RGWCD:0, USBR:389, USGS:29, HRS:0

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Water-Level Data

1970 to Present

1944 to Present

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Measurement Date	Depth to Water (ft)	Elevation (ft NAVD88)	Data Source(s)
05/10/1978	-2.38	7537.62	USBR
05/26/1978	-1.38	7536.62	USBR
06/09/1978	-1.30	7536.54	USBR
06/23/1978	0.70	7534.54	USBR
07/11/1978	1.12	7534.12	USBR
07/28/1978	0.70	7534.54	USBR
08/10/1978	0.95	7534.29	USBR
08/25/1978	1.53	7533.71	USBR
09/07/1978	0.28	7534.96	USBR
09/21/1978	-0.13	7535.37	USBR
10/06/1978	-0.30	7535.54	USBR
10/20/1978	-0.72	7535.96	USBR
11/07/1978	-1.38	7536.62	USBR
11/17/1978	-1.55	7536.79	USBR
12/01/1978	-1.80	7537.04	USBR
12/15/1978	-2.22	7537.46	USBR
01/04/1979	-2.30	7537.54	USBR
04/04/1979	-2.80	7538.04	USBR
04/20/1979	-2.80	7538.04	USBR
05/09/1979	-2.63	7537.87	USBR
05/18/1979	-2.22	7537.46	USBR
06/04/1979	-1.13	7536.37	USBR
06/15/1979	-0.30	7535.54	USBR
07/02/1979	0.28	7534.96	USBR
07/18/1979	0.53	7534.71	USBR
07/27/1979	-0.10	7535.34	USGS
07/28/1979	0.70	7534.54	USBR
08/13/1979	1.45	7533.79	USBR
08/24/1979	0.70	7534.54	USBR
09/10/1979	-0.05	7535.29	USBR
09/26/1979	-1.13	7536.37	USBR
10/15/1979	-0.97	7536.21	USBR
10/29/1979	-1.72	7536.96	USBR
11/23/1979	-1.97	7537.21	USBR
12/10/1979	-2.80	7538.04	USBR
01/29/1980	-2.13	7537.37	USBR
02/12/1980	-0.10	7535.34	USGS
02/27/1980	-2.22	7537.46	USBR
03/18/1980	-2.38	7537.62	USBR
04/11/1980	-2.63	7537.87	USBR
07/16/1980	2.05	7533.19	USBR
08/15/1980	2.85	7532.39	USBR
09/18/1980	0.30	7534.94	USBR
10/20/1980	-0.65	7535.89	USBR
11/17/1980	-0.85	7536.09	USBR
12/08/1980	-1.35	7536.59	USBR
01/27/1981	-1.45	7536.69	USBR
02/17/1981	-1.35	7536.59	USBR
03/31/1981	-1.75	7536.99	USBR
05/04/1981	-1.65	7536.89	USBR
06/02/1981	0.75	7534.49	USBR
06/23/1981	2.83	7532.41	USBR
07/20/1981	2.02	7533.22	USBR
08/21/1981	2.11	7533.13	USBR
09/30/1981	0.45	7534.79	USBR
10/22/1981	-0.25	7535.49	USBR
11/21/1981	-1.25	7536.49	USBR
12/21/1981	-1.95	7537.19	USBR
01/25/1982	-1.85	7537.09	USBR
03/09/1982	-1.65	7536.89	USBR
04/26/1982	-1.35	7536.59	USBR
05/24/1982	-0.75	7535.99	USBR
06/24/1982	-0.45	7535.69	USBR
08/27/1982	-0.35	7535.59	USBR
10/29/1982	-0.85	7536.09	USBR
11/30/1982	-0.95	7536.19	USBR
12/20/1982	-1.05	7536.29	USBR
01/18/1983	-1.05	7536.29	USBR
02/14/1983	-1.75	7536.99	USBR
03/20/1983	-2.25	7537.49	USBR
04/20/1983	-2.55	7537.79	USBR
05/19/1983	-2.55	7537.79	USBR
06/20/1983	-1.05	7536.29	USBR
07/25/1983	1.35	7533.89	USBR
09/20/1983	2.25	7532.99	USBR
10/19/1983	-0.15	7535.39	USBR
11/17/1983	-0.55	7535.79	USBR
12/16/1983	-0.35	7535.59	USBR
01/18/1984	-0.85	7536.09	USBR
02/17/1984	-1.45	7536.69	USBR
03/16/1984	-1.55	7536.79	USBR
04/19/1984	-1.95	7537.19	USBR
05/22/1984	-1.95	7537.19	USBR
06/20/1984	-2.15	7537.39	USBR
07/11/1984	0.15	7535.09	USBR
08/30/1984	2.05	7533.19	USBR
09/20/1984	0.25	7534.99	USBR
10/17/1984	-1.65	7536.89	USBR
11/20/1984	-2.05	7537.29	USBR
12/21/1984	-2.15	7537.39	USBR
04/23/1985	-2.25	7537.49	USBR
05/20/1985	-2.05	7537.29	USBR
06/19/1985	0.25	7534.99	USBR
08/16/1985	1.65	7533.59	USBR
09/16/1985	2.25	7532.99	USBR
10/23/1985	0.35	7534.89	USBR
11/22/1985	-1.05	7536.29	USBR
02/18/1986	-2.95	7538.19	USBR
03/25/1986	-3.15	7538.39	USBR
04/16/1986	-3.25	7538.49	USBR
05/21/1986	-1.95	7537.19	USBR
07/22/1986	-2.15	7537.39	USBR
09/17/1986	-2.35	7537.59	USBR
10/17/1986	-1.95	7537.19	USBR
11/25/1986	-1.45	7536.69	USBR
12/15/1986	-0.85	7536.09	USBR
03/26/1987	-2.22	7537.46	USBR
04/23/1987	-2.22	7537.46	USBR
05/18/1987	-2.63	7537.87	USBR
08/25/1987	1.53	7533.71	USBR
09/16/1987	-0.30	7535.54	USBR
10/21/1987	-2.30	7537.54	USBR
11/19/1987	-2.63	7537.87	USBR
12/18/1987	-2.30	7537.54	USBR
08/26/1988	7.49	7527.75	USBR
10/15/1988	5.94	7529.30	USBR
11/08/1988	9.03	7526.21	USBR
12/12/1988	10.63	7524.61	USBR
12/15/1988	10.62	7524.62	USBR
12/16/1988	10.63	7524.61	USBR
02/15/1989	6.58	7528.66	USBR
03/15/1989	9.87	7525.37	USBR
04/15/1989	10.45	7524.79	USBR
05/15/1989	11.05	7524.19	USBR
06/15/1989	11.51	7523.73	USBR
07/15/1989	10.90	7524.34	USBR
08/15/1989	8.96	7526.28	USBR
09/15/1989	7.17	7528.07	USBR
10/15/1989	7.42	7527.82	USBR
11/15/1989	8.19	7527.05	USBR
12/15/1989	8.53	7526.71	USBR
01/15/1990	8.31	7526.93	USBR
02/15/1990	8.57	7526.67	USBR
03/15/1990	9.36	7525.88	USBR
04/15/1990	8.59	7526.65	USBR
05/15/1990	8.96	7526.28	USBR
06/15/1990	10.50	7524.74	USBR
06/21/1990	11.08	7524.16	USBR
07/15/1990	11.91	7523.33	USBR
08/15/1990	12.57	7522.67	USBR
09/15/1990	10.68	7524.56	USBR
10/15/1990	9.66	7525.58	USBR
01/15/1991	9.36	7525.88	USBR
02/15/1991	9.37	7525.87	USBR
09/15/1991	10.93	7524.31	USBR
10/10/1991	10.79	7524.45	USBR
10/15/1991	10.81	7524.43	USBR
11/15/1991	10.49	7524.75	USBR
12/15/1991	10.40	7524.84	USBR
01/15/1992	10.34	7524.90	USBR
02/15/1992	10.21	7525.03	USBR
03/15/1992	10.17	7525.07	USBR
04/15/1992	10.12	7525.12	USBR
05/15/1992	10.38	7524.86	USBR
06/15/1992	12.82	7522.42	USBR
07/15/1992	11.22	7524.02	USBR
08/15/1992	7.98	7527.26	USBR
09/15/1992	5.49	7529.75	USBR
10/15/1992	5.08	7530.16	USBR
11/15/1992	4.25	7530.99	USBR
12/15/1992	4.10	7531.14	USBR
01/15/1993	5.75	7529.49	USBR
02/15/1993	7.60	7527.64	USBR
03/01/1993	8.09	7527.15	USBR
03/15/1993	8.46	7526.78	USBR
04/15/1993	8.82	7526.42	USBR
05/15/1993	8.99	7526.25	USBR
06/15/1993	7.76	7527.48	USBR
07/15/1993	9.18	7526.06	USBR
08/15/1993	8.34	7526.90	USBR
09/15/1993	5.52	7529.72	USBR
10/15/1993	5.29	7529.95	USBR
11/15/1993	7.22	7528.02	USBR
12/15/1993	4.92	7530.32	USBR
01/15/1994	5.49	7529.75	USBR
02/15/1994	6.65	7528.59	USBR
03/30/1994	5.87	7529.37	USBR
04/15/1994	4.80	7530.44	USBR
05/15/1994	6.00	7529.24	USBR
06/15/1994	6.21	7529.03	USBR
07/15/1994	8.28	7526.96	USBR
08/15/1994	8.39	7526.85	USBR
09/15/1994	5.48	7529.76	USBR
10/15/1994	5.52	7529.72	USBR
10/26/1994	5.81	7529.43	USGS
10/26/1994	5.24	7530.00	USBR
11/15/1994	4.27	7530.97	USBR
12/15/1994	4.37	7530.87	USBR
01/15/1995	8.26	7526.98	USBR
01/26/1995	8.02	7527.22	USGS
01/26/1995	7.45	7527.79	USBR
02/15/1995	7.62	7527.62	USBR
03/15/1995	8.37	7526.87	USBR
04/15/1995	5.49	7529.75	USBR
04/20/1995	5.27	7529.97	USGS
04/20/1995	4.70	7530.54	USBR
05/15/1995	4.42	7530.82	USBR
06/15/1995	5.53	7529.71	USBR
07/15/1995	6.36	7528.88	USBR
07/25/1995	6.57	7528.67	USBR
07/25/1995	7.14	7528.10	USGS
08/15/1995	7.30	7527.94	USBR
09/15/1995	4.93	7530.31	USBR
10/15/1995	4.88	7530.36	USBR
10/31/1995	4.88	7530.36	USBR
10/31/1995	5.45	7529.79	USGS
11/15/1995	4.58	7530.66	USBR
12/15/1995	3.27	7531.97	USBR
01/15/1996	3.27	7531.97	USBR
02/13/1996	4.53	7530.71	USGS
02/13/1996	3.96	7531.28	USBR
02/15/1996	4.35	7530.89	USBR
03/15/1996	7.70	7527.54	USBR
04/15/1996	4.69	7530.55	USBR
04/24/1996	5.47	7529.77	USGS
04/24/1996	4.90	7530.34	USBR
05/15/1996	5.88	7529.36	USBR
06/03/1996	6.74	7528.50	USBR
06/15/1996	7.63	7527.61	USBR
07/08/1996	7.71	7527.53	USBR
07/15/1996	7.77	7527.47	USBR
07/31/1996	8.85	7526.39	USGS
07/31/1996	8.28	7526.96	USBR
08/15/1996	10.76	7524.48	USBR
08/28/1996	10.31	7524.93	USBR
09/15/1996	8.70	7526.54	USBR
10/15/1996	8.53	7526.71	USBR
11/04/1996	7.17	7528.07	USBR
11/15/1996	7.37	7527.87	USBR
12/15/1996	10.21	7525.03	USBR
01/10/1997	8.83	7526.41	USGS
01/10/1997	8.26	7526.98	USBR
02/15/1997	8.57	7526.67	USBR
03/15/1997	9.07	7526.17	USBR
04/15/1997	9.68	7525.56	USBR
05/01/1997	10.82	7524.42	USGS
05/01/1997	10.25	7524.99	USBR
05/02/1997	10.23	7525.01	USBR
05/15/1997	10.65	7524.59	USBR
06/15/1997	11.71	7523.53	USBR
06/17/1997	11.69	7523.55	USBR
07/15/1997	13.92	7521.32	USBR
08/15/1997	13.82	7521.42	USBR
09/05/1997	13.12	7522.12	USBR
09/15/1997	12.73	7522.51	USBR
09/30/1997	10.38	7524.86	USBR
10/15/1997	10.04	7525.20	USBR
10/29/1997	12.40	7522.84	USGS
10/29/1997	11.83	7523.41	USBR
11/15/1997	9.91	7525.33	USBR
12/15/1997	10.08	7525.16	USBR
01/15/1998	12.10	7523.14	USBR
02/03/1998	9.83	7525.41	USBR
02/12/1998	9.79	7525.45	USBR
02/12/1998	10.36	7524.88	USGS
02/15/1998	9.81	7525.43	USBR
02/26/1998	9.75	7525.49	USBR
03/15/1998	9.46	7525.78	USBR
04/15/1998	9.64	7525.60	USBR
04/16/1998	9.69	7525.55	USBR
05/07/1998	11.19	7524.05	USGS
05/07/1998	10.62	7524.62	USBR
05/15/1998	10.78	7524.46	USBR
06/15/1998	12.93	7522.31	USBR
06/24/1998	12.58	7522.66	USBR
07/15/1998	14.01	7521.23	USBR
07/30/1998	14.56	7520.68	USBR
07/30/1998	15.13	7520.11	USGS
08/15/1998	14.77	7520.47	USBR
09/15/1998	12.56	7522.68	USBR
10/15/1998	10.81	7524.43	USBR
10/16/1998	10.82	7524.42	USBR
11/15/1998	9.69	7525.55	USBR
12/09/1998	9.92	7525.32	USGS
12/09/1998	9.35	7525.89	USBR
12/15/1998	9.29	7525.95	USBR
01/07/1999	8.73	7526.51	USBR
01/13/1999	8.91	7526.33	USBR
01/15/1999	8.82	7526.42	USBR
02/15/1999	8.84	7526.40	USBR
03/15/1999	8.20	7527.04	USBR
04/15/1999	9.31	7525.93	USBR
04/29/1999	9.77	7525.47	USBR
05/15/1999	9.88	7525.36	USBR
06/03/1999	11.06	7524.18	USBR
06/03/1999	11.63	7523.61	USGS
06/15/1999	11.56	7523.68	USBR
07/15/1999	14.10	7521.14	USBR
08/15/1999	12.56	7522.68	USBR
09/15/1999	10.73	7524.51	USBR
10/15/1999	9.31	7525.93	USBR
11/30/1999	9.18	7526.06	USGS
11/30/1999	8.61	7526.63	USBR
12/15/1999	10.88	7524.36	USBR
01/15/2000	8.95	7526.29	USBR
02/01/2000	10.76	7524.48	USBR
02/15/2000	7.68	7527.56	USBR
03/15/2000	8.86	7526.38	USBR
04/15/2000	8.90	7526.34	USBR
04/27/2000	9.30	7525.94	USBR
05/09/2000	12.43	7522.81	USBR
05/15/2000	12.12	7523.12	USBR
05/24/2000	13.20	7522.04	USBR
05/24/2000	13.77	7521.47	USGS
06/15/2000	12.16	7523.08	USBR
07/15/2000	13.48	7521.76	USBR
08/01/2000	13.56	7521.68	USBR
08/15/2000	13.69	7521.55	USBR
09/15/2000	11.27	7523.97	USBR
10/15/2000	9.59	7525.65	USBR
10/26/2000	9.22	7526.02	USBR
11/15/2000	9.02	7526.22	USBR
12/06/2000	8.61	7526.63	USGS
12/15/2000	8.36	7526.88	USBR
01/24/2001	8.37	7526.87	USBR
04/25/2001	8.80	7526.44	USBR
04/26/2001	10.06	7525.18	USBR
05/15/2001	8.61	7526.63	USBR
05/30/2001	9.61	7525.63	USGS,USBR
07/03/2001	12.23	7523.01	USBR
07/15/2001	12.87	7522.37	USBR
08/07/2001	13.65	7521.59	USBR
08/15/2001	12.55	7522.69	USBR
09/15/2001	10.48	7524.76	USBR
10/15/2001	9.39	7525.85	USBR
10/23/2001	9.13	7526.11	USBR
11/15/2001	8.84	7526.40	USBR
12/04/2001	8.54	7526.70	USGS,USBR
12/15/2001	8.14	7527.10	USBR
01/15/2002	7.98	7527.26	USBR
02/15/2002	8.03	7527.21	USBR
03/15/2002	7.92	7527.32	USBR
04/15/2002	8.46	7526.78	USBR
05/01/2002	9.04	7526.20	USBR
05/15/2002	9.68	7525.56	USBR
06/05/2002	10.85	7524.39	USBR
06/12/2002	11.91	7523.33	USBR
06/18/2002	12.59	7522.65	USBR
06/25/2002	13.26	7521.98	USBR
07/15/2002	14.25	7520.99	USBR
08/09/2002	14.31	7520.93	USBR
09/15/2002	11.51	7523.73	USBR
10/04/2002	10.02	7525.22	USBR
10/15/2002	9.34	7525.90	USBR
11/15/2002	8.16	7527.08	USBR
11/25/2002	7.94	7527.30	USBR
12/06/2002	7.05	7528.19	USBR
12/15/2002	6.08	7529.16	USBR
12/24/2002	5.76	7529.48	USBR
01/24/2003	8.40	7526.84	USGS,USBR
02/10/2003	8.63	7526.61	USBR
04/07/2003	8.93	7526.31	USBR
04/16/2003	9.01	7526.23	USBR
05/14/2003	9.78	7525.46	USGS,USBR
06/05/2003	10.81	7524.43	USBR
08/13/2003	14.31	7520.93	USBR
09/03/2003	11.24	7524.00	USGS,USBR
10/06/2003	7.56	7527.68	USBR
10/20/2003	7.57	7527.67	USBR
12/29/2003	7.37	7527.87	USBR
01/05/2004	7.35	7527.89	USBR
01/15/2004	7.30	7527.94	USBR
02/04/2004	7.15	7528.09	USBR
02/25/2004	7.11	7528.13	USBR
03/15/2004	6.90	7528.34	USBR
04/15/2004	7.15	7528.09	USBR
05/14/2004	7.51	7527.73	USBR
06/09/2004	8.98	7526.26	USBR
06/15/2004	9.57	7525.67	USBR
07/15/2004	12.26	7522.98	USBR
07/21/2004	12.66	7522.58	USBR
08/15/2004	12.27	7522.97	USBR
08/18/2004	11.99	7523.25	USGS
08/29/2004	11.48	7523.76	USBR
09/15/2004	10.40	7524.84	USBR
10/12/2004	8.61	7526.63	USBR
10/15/2004	8.70	7526.54	USBR
11/15/2004	8.53	7526.71	USBR
12/15/2004	7.61	7527.63	USBR
01/03/2005	7.51	7527.73	USBR
02/09/2005	7.50	7527.74	USBR
03/03/2005	7.39	7527.85	USGS,USBR
04/04/2005	6.96	7528.28	USBR
05/06/2005	8.18	7527.06	USBR
06/06/2005	9.86	7525.38	USBR
06/22/2005	10.56	7524.68	USBR
07/21/2005	13.39	7521.85	USBR
08/24/2005	11.66	7523.58	USGS,USBR
09/22/2005	9.66	7525.58	USBR
10/15/2005	8.50	7526.74	USBR
11/15/2005	7.92	7527.32	USBR
12/20/2005	7.26	7527.98	USBR
01/15/2006	7.05	7528.19	USBR
02/15/2006	6.96	7528.28	USBR
02/23/2006	7.09	7528.15	USBR
03/15/2006	7.13	7528.11	USBR
04/15/2006	7.50	7527.74	USBR
05/04/2006	8.45	7526.79	USBR
05/15/2006	8.74	7526.50	USBR
06/15/2006	10.44	7524.80	USBR
07/14/2006	11.56	7523.68	USBR
07/15/2006	11.62	7523.62	USBR
08/15/2006	11.25	7523.99	USBR
09/13/2006	10.05	7525.19	USBR
09/15/2006	-3.24	7538.48	USBR
10/15/2006	8.67	7526.57	USBR
11/15/2006	8.44	7526.80	USBR
12/15/2006	8.21	7527.03	USBR
01/15/2007	8.11	7527.13	USBR
02/15/2007	7.53	7527.71	USBR
03/15/2007	7.48	7527.76	USBR

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Well NA04001106DAD EW-71C (EW71C)Confined

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Water-Level Data

1970 to Present

1944 to Present

Well NA04001106DAD EW-71C (EW71C)
Confined