Well NA03901236DCC2 EW-16C (EW16C) Confined
Co-located Well(s): NA03901236DCC1 EW16U (EW16U)

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Well Information Table
Common Well ID	NA03901236DCC2 EW-16C
USBR Well ID	EW16C
USGS Well ID	373435105363602
USGS Station Name	NA03901236DCC2 EW-16C
USGS Construction Date	06/30/1980
USGS Site Type	Well
USGS Site Use Information	Observation
USGS Groundwater Use Information	Unused
Data Source(s)	USGS, USBR
Location Data
TRS	NA03901236DCC2 EW-16C
USBR TRS	NA03901236DCC2
USGS TRS 1	NA03901236DCC2 EW-16C
Longitude/Latitude (NAD83)	-105.61075057 , 37.57653067
Longitude/Latitude Data Source	USBOR EW well locations
USGS Longitude/Latitude (NAD83)	-105.6105703 , 37.57639287
USBR Longitude/Latitude (NAD27)	-105.610180221625 , 37.5765266896133
Easting, Northing RGDSS-NAD83 (US ft)	218348.70 , 211373.67
USGS Topography	Valley flat
USGS County	Alamosa County
USGS Map Name	TWIN PEAKS
USGS Map Scale	24000
Elevation and Depth Data
Ground Elevation (ft NAVD88)	7618.34000000000
Elevation Data Source	USBOR EW well database
USBR Ground Elevation (ft NGVD29)	7614.1
USGS Ground Elevation (ft NGVD29)	7514.00
1/3-Arc Second NED Ground Elevation (ft NAVD88)	7621.07
1-Arc Second NED Ground Elevation (ft NAVD88)	7619.13
SRTM Ground Elevation (ft NAVD88)	7621.11
Total Depth (ft)	180.00
USBR Total Depth (ft)	180
USGS Hole Depth (ft)	180.00
USGS Well Depth (ft)	180.00
Model Layer	2
Model Layer Source	Well Depth
Depth of Bottom of Layer 1	123
Depth of Bottom of Layer 2	506
Depth of Bottom of Layer 3	833
Depth of Bottom of Layer 4	1806
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	427
Water-level Date Range	09/04/1980 thru 12/15/2023
Monitored within the last 18 months	Yes, most recently on 12/15/2023
Depth-to-Water Range (ft)	-2.80 to 6.43
Water Table Elevation Range (ft NAVD88)	7611.91 to 7621.14
Water-Level-Source:Number-of-Measurements	USGS:32 USBR:397

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Water-level Data

2019 to Present

1967 to Present

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Measurement Date	Depth to Water (ft)	Elevation (ft NAVD88)	Data Source(s)
09/04/1980	2.98	7615.36	USGS
03/21/1981	2.56	7615.78	USBR
04/24/1981	2.50	7615.84	USBR
06/01/1981	2.50	7615.84	USBR
06/22/1981	2.60	7615.74	USBR
07/16/1981	2.90	7615.44	USBR
08/17/1981	2.90	7615.44	USBR
09/16/1981	3.00	7615.34	USBR
10/23/1981	3.00	7615.34	USBR
01/15/1982	2.80	7615.54	USBR
03/15/1982	2.70	7615.64	USBR
05/15/1982	2.70	7615.64	USBR
06/15/1982	2.60	7615.74	USBR
07/15/1982	3.20	7615.14	USBR
11/16/1982	2.40	7615.94	USBR
12/22/1982	2.00	7616.34	USBR
01/26/1983	2.00	7616.34	USBR
02/15/1983	2.00	7616.34	USBR
03/15/1983	2.00	7616.34	USBR
04/15/1983	1.80	7616.54	USBR
05/08/1983	1.80	7616.54	USBR
08/31/1983	1.58	7616.76	USBR
09/15/1983	1.12	7617.22	USBR
10/15/1983	1.50	7616.84	USBR
11/15/1983	1.59	7616.75	USBR
12/15/1983	1.17	7617.17	USBR
04/15/1984	0.84	7617.50	USBR
05/15/1984	0.38	7617.96	USBR
06/15/1984	1.75	7616.59	USBR
07/15/1984	1.42	7616.92	USBR
08/15/1984	0.91	7617.43	USBR
09/15/1984	0.91	7617.43	USBR
05/15/1986	-0.08	7618.42	USBR
06/15/1986	-0.08	7618.42	USBR
09/15/1986	0.24	7618.10	USBR
09/15/1987	-0.67	7619.01	USBR
12/10/1987	-1.17	7619.51	USBR
05/25/1988	-0.68	7619.02	USBR
06/15/1988	-0.87	7619.21	USBR
07/15/1988	-1.09	7619.43	USBR
08/15/1988	-0.75	7619.09	USBR
10/19/1988	-0.70	7619.04	USBR
12/15/1988	-0.72	7619.06	USBR
02/15/1989	-0.77	7619.11	USBR
03/15/1989	-0.93	7619.27	USBR
04/15/1989	-1.01	7619.35	USBR
05/15/1989	-0.90	7619.24	USBR
06/15/1989	-0.61	7618.95	USBR
07/15/1989	-0.22	7618.56	USBR
08/15/1989	-0.26	7618.60	USBR
09/15/1989	0.02	7618.32	USBR
10/15/1989	0.00	7618.34	USBR
11/15/1989	-0.09	7618.43	USBR
12/15/1989	-0.17	7618.51	USBR
01/15/1990	-0.17	7618.51	USBR
02/15/1990	-0.24	7618.58	USBR
03/15/1990	-0.24	7618.58	USBR
04/15/1990	-0.29	7618.63	USBR
05/15/1990	-0.40	7618.74	USBR
06/15/1990	-0.63	7618.97	USBR
07/09/1990	-0.25	7618.59	USBR
08/15/1990	0.08	7618.26	USBR
09/15/1990	0.33	7618.01	USBR
11/15/1990	-0.09	7618.43	USBR
12/15/1990	-0.19	7618.53	USBR
01/15/1991	-0.23	7618.57	USBR
02/15/1991	-0.15	7618.49	USBR
03/15/1991	-0.32	7618.66	USBR
04/15/1991	-0.43	7618.77	USBR
05/15/1991	-0.36	7618.70	USBR
06/15/1991	-0.32	7618.66	USBR
07/15/1991	-0.17	7618.51	USBR
08/15/1991	-0.17	7618.51	USBR
09/15/1991	-0.06	7618.40	USBR
10/09/1991	-0.08	7618.42	USBR
11/15/1991	-0.26	7618.60	USBR
12/29/1994	-1.66	7620.00	USBR
12/29/1994	-1.64	7619.98	USGS
03/22/1995	-1.98	7620.32	USGS
03/22/1995	-2.00	7620.34	USBR
06/22/1995	-2.15	7620.49	USBR
06/22/1995	-2.13	7620.47	USGS
09/21/1995	-1.86	7620.20	USGS
09/21/1995	-1.88	7620.22	USBR
01/12/1996	-2.17	7620.51	USGS
01/12/1996	-2.19	7620.53	USBR
03/26/1996	-2.55	7620.89	USBR
03/26/1996	-2.53	7620.87	USGS
05/13/1996	-2.47	7620.81	USBR
06/27/1996	-1.90	7620.24	USBR
06/27/1996	-1.88	7620.22	USGS
07/12/1996	-1.77	7620.11	USBR
09/04/1996	-1.15	7619.49	USBR
09/25/1996	-1.21	7619.55	USBR
09/25/1996	-1.19	7619.53	USGS
11/08/1996	-1.32	7619.66	USBR
01/08/1997	-1.52	7619.86	USBR
01/10/1997	-1.52	7619.86	USBR
01/10/1997	-1.50	7619.84	USGS
04/03/1997	-1.72	7620.06	USBR
04/03/1997	-1.70	7620.04	USGS
04/28/1997	-1.70	7620.04	USBR
06/03/1997	-1.69	7620.03	USBR
06/26/1997	-1.65	7619.99	USGS
06/26/1997	-1.67	7620.01	USBR
08/12/1997	-1.52	7619.86	USBR
10/02/1997	-1.63	7619.97	USBR
10/02/1997	-1.61	7619.95	USGS
12/16/1997	-1.94	7620.28	USBR
03/19/1998	-2.38	7620.72	USBR
04/10/1998	-2.52	7620.86	USBR
04/14/1998	-2.55	7620.89	USBR
04/14/1998	-2.53	7620.87	USGS
06/18/1998	-1.87	7620.21	USBR
10/06/1998	-1.43	7619.77	USBR
10/06/1998	-1.41	7619.75	USGS
02/01/1999	-2.09	7620.43	USBR
04/08/1999	-2.28	7620.62	USGS
04/08/1999	-2.30	7620.64	USBR
05/20/1999	-2.52	7620.86	USBR
09/22/1999	-2.14	7620.48	USGS
09/22/1999	-2.16	7620.50	USBR
01/19/2000	-2.45	7620.79	USBR
03/22/2000	-2.75	7621.09	USBR
03/31/2000	-2.80	7621.14	USBR
04/25/2000	-2.71	7621.05	USBR
04/25/2000	-2.69	7621.03	USGS
06/13/2000	-2.13	7620.47	USBR
08/04/2000	-1.42	7619.76	USBR
08/23/2000	-1.24	7619.58	USBR
10/06/2000	-1.10	7619.44	USBR
10/27/2000	-1.22	7619.56	USGS
11/14/2000	-1.29	7619.63	USBR
02/06/2001	-1.47	7619.81	USBR
03/13/2001	-1.56	7619.90	USBR
03/22/2001	-1.62	7619.96	USBR
04/05/2001	-1.64	7619.98	USGS,USBR
05/06/2001	-1.67	7620.01	USBR
05/15/2001	-1.80	7620.14	USBR
06/06/2001	-1.68	7620.02	USBR
06/15/2001	-1.60	7619.94	USBR
07/15/2001	-1.22	7619.56	USBR
08/15/2001	-0.97	7619.31	USBR
08/29/2001	-0.91	7619.25	USBR
09/20/2001	-0.79	7619.13	USGS,USBR
10/15/2001	-0.74	7619.08	USBR
11/27/2001	-0.97	7619.31	USBR
01/15/2002	-1.12	7619.46	USBR
02/15/2002	-1.13	7619.47	USBR
03/15/2002	-1.20	7619.54	USBR
04/13/2002	-1.26	7619.60	USBR
04/15/2002	-1.31	7619.65	USBR
05/15/2002	-1.15	7619.49	USBR
05/16/2002	-1.15	7619.49	USGS
06/15/2002	-0.80	7619.14	USBR
07/15/2002	-0.46	7618.80	USBR
08/15/2002	-0.18	7618.52	USBR
09/07/2002	-0.05	7618.39	USBR
09/15/2002	-0.03	7618.37	USBR
10/15/2002	-0.13	7618.47	USBR
11/14/2002	-0.20	7618.54	USGS
11/15/2002	-0.20	7618.54	USBR
12/15/2002	-0.27	7618.61	USBR
01/15/2003	-0.30	7618.64	USBR
02/15/2003	-0.31	7618.65	USBR
03/15/2003	-0.33	7618.67	USBR
04/15/2003	-0.50	7618.84	USBR
04/16/2003	-0.43	7618.77	USGS
04/22/2003	-0.51	7618.85	USBR
05/15/2003	-0.41	7618.75	USBR
06/15/2003	-0.46	7618.80	USBR
07/15/2003	-0.14	7618.48	USBR
08/15/2003	0.29	7618.05	USBR
09/15/2003	0.46	7617.88	USBR
09/23/2003	0.49	7617.85	USBR
10/07/2003	0.48	7617.86	USGS
10/15/2003	0.50	7617.84	USBR
11/15/2003	0.44	7617.90	USBR
12/15/2003	0.37	7617.97	USBR
01/15/2004	0.35	7617.99	USBR
01/15/2004	0.30	7618.04	USGS
02/15/2004	0.33	7618.01	USBR
03/15/2004	0.27	7618.07	USBR
04/13/2004	0.17	7618.17	USGS
04/15/2004	0.20	7618.14	USBR
05/01/2004	0.22	7618.12	USBR
05/15/2004	0.28	7618.06	USBR
06/15/2004	0.63	7617.71	USBR
07/15/2004	0.96	7617.38	USBR
07/22/2004	0.95	7617.39	USGS
08/15/2004	1.19	7617.15	USBR
09/15/2004	1.38	7616.96	USBR
10/15/2004	1.29	7617.05	USBR
10/26/2004	1.28	7617.06	USGS
11/15/2004	1.26	7617.08	USBR
12/15/2004	1.23	7617.11	USBR
01/15/2005	1.26	7617.08	USBR
02/15/2005	1.14	7617.20	USBR
03/15/2005	1.05	7617.29	USBR
04/15/2005	1.02	7617.32	USBR
04/26/2005	1.00	7617.34	USGS
05/06/2005	0.94	7617.40	USBR
05/15/2005	0.96	7617.38	USBR
07/15/2005	0.94	7617.40	USBR
07/26/2005	1.11	7617.23	USGS
08/15/2005	1.37	7616.97	USBR
09/15/2005	1.53	7616.81	USBR
10/15/2005	1.53	7616.81	USBR
10/19/2005	1.50	7616.84	USGS
11/15/2005	1.46	7616.88	USBR
12/15/2005	1.37	7616.97	USBR
01/15/2006	1.32	7617.02	USBR
02/15/2006	1.27	7617.07	USBR
03/15/2006	1.28	7617.06	USBR
04/15/2006	1.22	7617.12	USBR
05/15/2006	1.30	7617.04	USBR
06/15/2006	1.54	7616.80	USBR
07/15/2006	1.69	7616.65	USBR
08/15/2006	1.90	7616.44	USBR
09/15/2006	2.00	7616.34	USBR
10/15/2006	2.00	7616.34	USBR
11/15/2006	1.89	7616.45	USBR
12/15/2006	1.81	7616.53	USBR
01/15/2007	1.77	7616.57	USBR
02/15/2007	1.80	7616.54	USBR
03/15/2007	1.78	7616.56	USBR
04/15/2007	1.66	7616.68	USBR
05/15/2007	1.62	7616.72	USBR
06/15/2007	1.51	7616.83	USBR
08/15/2007	1.44	7616.90	USBR
09/15/2007	1.79	7616.55	USBR
10/15/2007	1.78	7616.56	USBR
11/15/2007	1.69	7616.65	USBR
12/15/2007	1.53	7616.81	USBR
01/14/2008	1.48	7616.86	USBR
02/15/2008	1.41	7616.93	USBR
03/15/2008	1.33	7617.01	USBR
04/15/2008	1.29	7617.05	USBR
05/15/2008	1.31	7617.03	USBR
06/15/2008	1.45	7616.89	USBR
07/15/2008	1.75	7616.59	USBR
08/15/2008	2.06	7616.28	USBR
09/15/2008	2.12	7616.22	USBR
10/15/2008	2.12	7616.22	USBR
11/15/2008	2.00	7616.34	USBR
12/15/2008	1.86	7616.48	USBR
01/15/2009	1.83	7616.51	USBR
02/15/2009	1.77	7616.57	USBR
03/15/2009	1.70	7616.64	USBR
04/15/2009	1.58	7616.76	USBR
05/15/2009	1.60	7616.74	USBR
06/15/2009	1.70	7616.64	USBR
07/15/2009	1.64	7616.70	USBR
08/15/2009	2.09	7616.25	USBR
09/15/2009	2.36	7615.98	USBR
10/15/2009	2.34	7616.00	USBR
11/15/2009	2.19	7616.15	USBR
12/15/2009	2.15	7616.19	USBR
01/15/2010	2.07	7616.27	USBR
02/15/2010	2.02	7616.32	USBR
03/15/2010	2.00	7616.34	USBR
04/15/2010	1.94	7616.40	USBR
05/15/2010	1.92	7616.42	USBR
06/15/2010	1.50	7616.84	USBR
07/15/2010	1.97	7616.37	USBR
08/15/2010	2.14	7616.20	USBR
09/15/2010	2.45	7615.89	USBR
10/15/2010	2.48	7615.86	USBR
11/15/2010	2.34	7616.00	USBR
12/15/2010	2.20	7616.14	USBR
01/15/2011	2.19	7616.15	USBR
02/15/2011	2.13	7616.21	USBR
03/15/2011	2.11	7616.23	USBR
04/15/2011	2.10	7616.24	USBR
05/15/2011	2.12	7616.22	USBR
06/15/2011	2.34	7616.00	USBR
07/15/2011	2.69	7615.65	USBR
08/15/2011	2.94	7615.40	USBR
09/06/2011	3.01	7615.33	USBR
09/15/2011	2.97	7615.37	USBR
10/15/2011	3.00	7615.34	USBR
11/15/2011	2.88	7615.46	USBR
12/15/2011	2.82	7615.52	USBR
01/15/2012	2.76	7615.58	USBR
02/15/2012	2.73	7615.61	USBR
03/15/2012	2.70	7615.64	USBR
04/15/2012	2.65	7615.69	USBR
05/15/2012	2.75	7615.59	USBR
06/15/2012	3.04	7615.30	USBR
07/15/2012	3.31	7615.03	USBR
08/15/2012	3.57	7614.77	USBR
09/15/2012	3.62	7614.72	USBR
10/15/2012	3.58	7614.76	USBR
11/15/2012	3.53	7614.81	USBR
12/15/2012	3.47	7614.87	USBR
01/15/2013	3.44	7614.90	USBR
02/15/2013	3.39	7614.95	USBR
03/15/2013	3.37	7614.97	USBR
04/15/2013	3.31	7615.03	USBR
05/15/2013	3.33	7615.01	USBR
06/15/2013	3.58	7614.76	USBR
07/15/2013	3.85	7614.49	USBR
08/14/2013	4.04	7614.30	USBR
09/15/2013	4.21	7614.13	USBR
10/15/2013	4.25	7614.09	USBR
11/15/2013	4.14	7614.20	USBR
12/15/2013	4.15	7614.19	USBR
01/15/2014	4.12	7614.22	USBR
02/15/2014	4.08	7614.26	USBR
03/15/2014	4.01	7614.33	USBR
04/15/2014	3.98	7614.36	USBR
05/15/2014	3.99	7614.35	USBR
06/15/2014	4.14	7614.20	USBR
07/15/2014	4.46	7613.88	USBR
08/15/2014	4.62	7613.72	USBR
09/15/2014	4.85	7613.49	USBR
10/15/2014	4.90	7613.44	USBR
11/15/2014	4.80	7613.54	USBR
12/15/2014	4.73	7613.61	USBR
01/15/2015	4.69	7613.65	USBR
02/15/2015	4.58	7613.76	USBR
03/15/2015	4.57	7613.77	USBR
04/15/2015	4.48	7613.86	USBR
05/15/2015	4.46	7613.88	USBR
06/15/2015	4.54	7613.80	USBR
07/15/2015	4.36	7613.98	USBR
08/15/2015	4.66	7613.68	USBR
09/15/2015	4.93	7613.41	USBR
10/15/2015	5.03	7613.31	USBR
11/15/2015	4.92	7613.42	USBR
12/15/2015	4.79	7613.55	USBR
01/15/2016	4.72	7613.62	USBR
02/15/2016	4.67	7613.67	USBR
03/15/2016	4.61	7613.73	USBR
04/15/2016	4.52	7613.82	USBR
05/15/2016	4.51	7613.83	USBR
06/15/2016	4.21	7614.13	USBR
07/15/2016	4.06	7614.28	USBR
08/15/2016	4.14	7614.20	USBR
09/15/2016	4.23	7614.11	USBR
10/15/2016	4.30	7614.04	USBR
11/15/2016	4.25	7614.09	USBR
12/15/2016	4.19	7614.15	USBR
01/15/2017	4.07	7614.27	USBR
02/15/2017	4.04	7614.30	USBR
03/15/2017	3.97	7614.37	USBR
04/15/2017	3.90	7614.44	USBR
05/15/2017	3.85	7614.49	USBR
06/15/2017	3.65	7614.69	USBR
07/15/2017	3.71	7614.63	USBR
08/15/2017	3.74	7614.60	USBR
09/15/2017	4.00	7614.34	USBR
10/15/2017	4.02	7614.32	USBR
11/15/2017	3.85	7614.49	USBR
12/10/2017	3.79	7614.55	USBR
01/15/2018	3.65	7614.69	USBR
02/15/2018	3.55	7614.79	USBR
03/15/2018	3.46	7614.88	USBR
04/15/2018	3.46	7614.88	USBR
05/15/2018	3.45	7614.89	USBR
06/15/2018	3.68	7614.66	USBR
07/15/2018	4.05	7614.29	USBR
08/15/2018	4.28	7614.06	USBR
09/15/2018	4.46	7613.88	USBR
10/15/2018	4.47	7613.87	USBR
11/15/2018	4.31	7614.03	USBR
12/15/2018	4.22	7614.12	USBR
01/15/2019	4.10	7614.24	USBR
02/15/2019	4.01	7614.33	USBR
03/15/2019	3.98	7614.36	USBR
04/15/2019	3.91	7614.43	USBR
05/15/2019	3.88	7614.46	USBR
06/15/2019	3.85	7614.49	USBR
07/15/2019	3.80	7614.54	USBR
08/15/2019	4.03	7614.31	USBR
09/15/2019	4.37	7613.97	USBR
10/15/2019	4.49	7613.85	USBR
11/15/2019	4.42	7613.92	USBR
12/15/2019	4.20	7614.14	USBR
01/15/2020	4.08	7614.26	USBR
02/15/2020	3.98	7614.36	USBR
03/15/2020	3.99	7614.35	USBR
04/15/2020	3.94	7614.40	USBR
05/15/2020	3.96	7614.38	USBR
06/15/2020	4.04	7614.30	USBR
07/15/2020	4.38	7613.96	USBR
08/15/2020	4.58	7613.76	USBR
09/15/2020	4.90	7613.44	USBR
10/15/2020	5.00	7613.34	USBR
11/15/2020	5.01	7613.33	USBR
12/15/2020	4.70	7613.64	USBR
01/15/2021	4.71	7613.63	USBR
02/15/2021	4.64	7613.70	USBR
03/15/2021	4.55	7613.79	USBR
04/15/2021	4.58	7613.76	USBR
05/15/2021	4.59	7613.75	USBR
06/15/2021	4.69	7613.65	USBR
07/15/2021	5.03	7613.31	USBR
08/15/2021	5.14	7613.20	USBR
09/15/2021	5.37	7612.97	USBR
10/15/2021	5.51	7612.83	USBR
11/15/2021	5.42	7612.92	USBR
12/15/2021	5.34	7613.00	USBR
01/15/2022	5.29	7613.05	USBR
02/15/2022	5.20	7613.14	USBR
03/15/2022	5.20	7613.14	USBR
04/15/2022	5.12	7613.22	USBR
05/15/2022	5.15	7613.19	USBR
06/15/2022	5.29	7613.05	USBR
07/15/2022	5.48	7612.86	USBR
08/15/2022	5.70	7612.64	USBR
09/15/2022	5.84	7612.50	USBR
10/15/2022	5.88	7612.46	USBR
11/15/2022	5.83	7612.51	USBR
12/15/2022	5.84	7612.50	USBR
01/15/2023	5.71	7612.63	USBR
02/15/2023	5.69	7612.65	USBR
03/15/2023	5.68	7612.66	USBR
04/15/2023	5.67	7612.67	USBR
05/15/2023	5.68	7612.66	USBR
06/15/2023	5.77	7612.57	USBR
07/14/2023	6.06	7612.28	USBR
08/15/2023	6.31	7612.03	USBR
09/15/2023	6.38	7611.96	USBR
10/15/2023	6.43	7611.91	USBR
11/15/2023	6.35	7611.99	USBR
12/15/2023	6.30	7612.04	USBR

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Well NA03901236DCC2 EW-16C (EW16C)Confined

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Water-level Data

2019 to Present

1967 to Present

Well NA03901236DCC2 EW-16C (EW16C)
Confined