Well NA04001102BAA3 EW-36C-2 (EW36C2) Confined
Co-located Well(s): NA04001102BAA1 EW-36U (EW36U) NA04001102BAA2 EW-36C-1 (EW36C1)

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Well Information Table
Common Well ID	NA04001102BAA3 EW-36C-2
USBR Well ID	EW36C2
USGS Well ID	374505105440903
GSDNP Well Name	374505105440903
USGS Station Name	NA04001102BAA3 EW-36C-2
USGS Construction Date	06/15/1994
USGS Site Type	Well
USGS Site Use Information	Observation
USGS Groundwater Use Information	Unknown
Data Source(s)	USGS, USBR
Location Data
TRS	NA04001102BAA3 EW-36C-2
USBR TRS	NA04001102BAA3
USGS TRS 1	NA04001102BAA3 EW-36C-2
Longitude/Latitude (NAD83)	-105.73664741 , 37.75128934
Longitude/Latitude Data Source	USBOR EW well locations
USGS Longitude/Latitude (NAD83)	-105.7364068 , 37.75138868
USBR Longitude/Latitude (NAD27)	-105.736073923927 , 37.7512895452907
Easting, Northing RGDSS-NAD83 (US ft)	181921.88 , 274989.92
USGS County	Alamosa County
Elevation and Depth Data
Ground Elevation (ft NAVD88)	7553.79
Elevation Data Source	USBOR EW well database
USBR Ground Elevation (ft NGVD29)	7549.7
USGS Ground Elevation (ft NGVD29)	7542.70
1/3-Arc Second NED Ground Elevation (ft NAVD88)	7555.25
1-Arc Second NED Ground Elevation (ft NAVD88)	7554.02
SRTM Ground Elevation (ft NAVD88)	7557.49
Total Depth (ft)	240.00
USBR Total Depth (ft)	240
USGS Well Depth (ft)	212.00
Model Layer	2
Model Layer Source	Well Depth
Depth of Bottom of Layer 1	118
Depth of Bottom of Layer 2	414
Depth of Bottom of Layer 3	1596
Depth of Bottom of Layer 4	3253
Additional Well Information	Construction
Aquifer Information
Aquifer Type	Confined
Aquifer Type Source	EW_AQFR
USGS Aquifer Type	Confined Single Aquifer
USGS Hydrologic Unit	San Luis
USGS Data Available	Water-level (GW.LEV)
Water-level Database Information
Water-level Count	322
Water-level Date Range	07/31/1996 thru 02/19/2025
Monitored within the last 18 months	Yes, most recently on 02/19/2025
Depth-to-Water Range (ft)	-5.23 to -2.77
Water Table Elevation Range (ft NAVD88)	7556.56 to 7559.02
Water-Level-Source:Number-of-Measurements	USGS:19 USBR:316

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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)
07/31/1996	-5.23	7559.02	USGS,USBR
08/28/1996	-5.10	7558.89	USBR
09/15/1996	-5.06	7558.85	USBR
10/15/1996	-5.00	7558.79	USBR
11/04/1996	-5.03	7558.82	USBR
12/15/1996	-5.07	7558.86	USBR
01/15/1997	-4.96	7558.75	USBR
03/15/1997	-4.73	7558.52	USBR
04/18/1997	-4.43	7558.22	USBR
05/29/1997	-4.39	7558.18	USBR
06/17/1997	-4.38	7558.17	USBR
07/15/1997	-4.21	7558.00	USBR
08/15/1997	-4.00	7557.79	USBR
09/24/1997	-4.07	7557.86	USGS,USBR
10/15/1997	-3.82	7557.61	USBR
11/15/1997	-3.91	7557.70	USBR
12/15/1997	-4.01	7557.80	USBR
01/15/1998	-3.99	7557.78	USBR
02/03/1998	-3.99	7557.78	USBR
03/15/1998	-4.10	7557.89	USBR
04/16/1998	-4.34	7558.13	USGS,USBR
05/15/1998	-4.26	7558.05	USBR
06/15/1998	-4.25	7558.04	USBR
08/15/1998	-4.07	7557.86	USBR
09/15/1998	-3.83	7557.62	USBR
10/07/1998	-3.89	7557.68	USGS,USBR
11/15/1998	-4.00	7557.79	USBR
12/15/1998	-4.19	7557.98	USBR
01/13/1999	-4.33	7558.12	USBR
02/15/1999	-4.39	7558.18	USBR
03/15/1999	-4.51	7558.30	USBR
04/08/1999	-4.66	7558.45	USGS,USBR
05/15/1999	-4.59	7558.38	USBR
06/15/1999	-4.52	7558.31	USBR
07/15/1999	-4.45	7558.24	USBR
08/15/1999	-4.26	7558.05	USBR
09/21/1999	-4.14	7557.93	USGS,USBR
10/15/1999	-4.22	7558.01	USBR
11/09/1999	-4.71	7558.50	USBR
12/15/1999	-4.65	7558.44	USBR
01/15/2000	-4.67	7558.46	USBR
03/29/2000	-4.45	7558.24	USGS,USBR
04/15/2000	-4.61	7558.40	USBR
05/04/2000	-4.53	7558.32	USBR
06/15/2000	-4.40	7558.19	USBR
07/15/2000	-4.29	7558.08	USBR
08/01/2000	-3.96	7557.75	USBR
08/16/2000	-3.80	7557.59	USBR
08/16/2000	-3.81	7557.60	USGS
09/15/2000	-3.69	7557.48	USBR
10/26/2000	-3.78	7557.57	USBR
11/15/2000	-3.93	7557.72	USBR
12/15/2000	-4.00	7557.79	USBR
01/24/2001	-4.47	7558.26	USBR
03/01/2001	-4.31	7558.10	USGS
03/01/2001	-4.30	7558.09	USBR
03/14/2001	-4.40	7558.19	USBR
04/15/2001	-4.40	7558.19	USBR
05/15/2001	-4.43	7558.22	USBR
06/28/2001	-4.37	7558.16	USBR
07/15/2001	-4.32	7558.11	USBR
08/22/2001	-4.02	7557.81	USGS,USBR
09/15/2001	-3.89	7557.68	USBR
10/08/2001	-3.93	7557.72	USBR
12/20/2001	-4.27	7558.06	USBR
01/16/2002	-4.20	7557.99	USGS,USBR
03/19/2002	-4.57	7558.36	USBR
04/30/2002	-4.61	7558.40	USBR
06/25/2002	-4.19	7557.98	USBR
07/31/2002	-3.79	7557.58	USGS,USBR
09/15/2002	-3.39	7557.18	USBR
10/10/2002	-3.47	7557.26	USBR
10/11/2002	-3.48	7557.27	USGS
01/24/2003	-4.06	7557.85	USGS,USBR
02/15/2003	-4.03	7557.82	USBR
03/15/2003	-4.00	7557.79	USBR
04/16/2003	-3.92	7557.71	USBR
05/15/2003	-4.04	7557.83	USBR
06/15/2003	-3.97	7557.76	USBR
07/09/2003	-3.69	7557.48	USGS,USBR
08/15/2003	-3.27	7557.06	USBR
09/15/2003	-3.21	7557.00	USBR
10/06/2003	-3.35	7557.14	USBR
11/15/2003	-3.50	7557.29	USBR
12/15/2003	-3.58	7557.37	USBR
01/14/2004	-3.64	7557.43	USGS,USBR
02/15/2004	-3.80	7557.59	USBR
03/25/2004	-3.89	7557.68	USBR
04/15/2004	-4.04	7557.83	USBR
05/17/2004	-4.14	7557.93	USBR
06/15/2004	-4.03	7557.82	USBR
07/15/2004	-3.62	7557.41	USBR
07/19/2004	-3.62	7557.41	USBR
07/21/2004	-3.61	7557.40	USGS
09/07/2004	-3.06	7556.85	USBR
11/08/2004	-3.19	7556.98	USBR
12/15/2004	-3.40	7557.19	USBR
01/19/2005	-3.54	7557.33	USBR
02/15/2005	-3.68	7557.47	USBR
03/03/2005	-3.67	7557.46	USGS
03/15/2005	-3.73	7557.52	USBR
04/04/2005	-3.82	7557.61	USBR
05/15/2005	-3.81	7557.60	USBR
06/06/2005	-3.72	7557.51	USBR
07/15/2005	-3.34	7557.13	USBR
08/15/2005	-3.04	7556.83	USBR
08/24/2005	-2.95	7556.74	USGS
09/22/2005	-2.77	7556.56	USBR
12/20/2005	-3.22	7557.01	USBR
02/23/2006	-3.57	7557.36	USBR
05/04/2006	-3.67	7557.46	USBR
07/14/2006	-3.27	7557.06	USBR
09/13/2006	-2.89	7556.68	USBR
11/20/2006	-3.23	7557.02	USBR
02/15/2007	-3.73	7557.52	USBR
03/15/2007	-3.91	7557.70	USBR
04/09/2007	-4.09	7557.88	USBR
05/15/2007	-4.18	7557.97	USBR
06/26/2007	-4.02	7557.81	USBR
07/15/2007	-3.82	7557.61	USBR
08/15/2007	-3.61	7557.40	USBR
09/06/2007	-3.45	7557.24	USBR
10/24/2007	-3.45	7557.24	USBR
12/05/2007	-3.80	7557.59	USBR
02/15/2008	-4.17	7557.96	USBR
03/25/2008	-4.07	7557.86	USBR
04/15/2008	-4.35	7558.14	USBR
05/15/2008	-4.10	7557.89	USBR
06/09/2008	-4.02	7557.81	USBR
07/15/2008	-3.70	7557.49	USBR
08/15/2008	-3.39	7557.18	USBR
09/04/2008	-3.29	7557.08	USBR
10/15/2008	-3.27	7557.06	USBR
11/19/2008	-3.61	7557.40	USBR
12/15/2008	-3.84	7557.63	USBR
01/13/2009	-3.92	7557.71	USBR
02/15/2009	-4.16	7557.95	USBR
03/15/2009	-4.04	7557.83	USBR
04/15/2009	-4.25	7558.04	USBR
05/15/2009	-4.17	7557.96	USBR
06/15/2009	-4.01	7557.80	USBR
07/07/2009	-3.95	7557.74	USBR
08/15/2009	-3.46	7557.25	USBR
09/15/2009	-3.26	7557.05	USBR
10/07/2009	-3.32	7557.11	USBR
11/15/2009	-3.66	7557.45	USBR
12/15/2009	-3.93	7557.72	USBR
01/05/2010	-4.00	7557.79	USBR
02/15/2010	-4.16	7557.95	USBR
03/23/2010	-4.27	7558.06	USBR
04/15/2010	-4.22	7558.01	USBR
06/01/2010	-4.20	7557.99	USBR
06/15/2010	-4.16	7557.95	USBR
07/15/2010	-3.85	7557.64	USBR
08/15/2010	-3.63	7557.42	USBR
09/08/2010	-3.51	7557.30	USBR
10/15/2010	-3.46	7557.25	USBR
11/15/2010	-3.68	7557.47	USBR
12/09/2010	-3.70	7557.49	USBR
01/15/2011	-3.88	7557.67	USBR
02/15/2011	-3.99	7557.78	USBR
03/09/2011	-4.00	7557.79	USBR
04/15/2011	-4.12	7557.91	USBR
05/20/2011	-4.12	7557.91	USBR
06/15/2011	-3.98	7557.77	USBR
07/15/2011	-3.71	7557.50	USBR
08/22/2011	-3.30	7557.09	USBR
09/15/2011	-3.25	7557.04	USBR
10/15/2011	-3.36	7557.15	USBR
11/16/2011	-3.50	7557.29	USBR
12/15/2011	-3.70	7557.49	USBR
01/15/2012	-3.76	7557.55	USBR
02/22/2012	-3.90	7557.69	USBR
03/15/2012	-3.96	7557.75	USBR
04/15/2012	-3.91	7557.70	USBR
05/08/2012	-4.04	7557.83	USBR
07/09/2012	-3.69	7557.48	USBR
08/14/2012	-3.32	7557.11	USBR
11/07/2012	-3.33	7557.12	USBR
02/20/2013	-3.86	7557.65	USBR
03/15/2013	-3.91	7557.70	USBR
04/19/2013	-3.94	7557.73	USBR
05/15/2013	-3.97	7557.76	USBR
06/27/2013	-3.82	7557.61	USBR
07/15/2013	-3.69	7557.48	USBR
08/09/2013	-3.49	7557.28	USBR
09/15/2013	-3.46	7557.25	USBR
10/28/2013	-3.54	7557.33	USBR
11/13/2013	-3.56	7557.35	USBR
12/15/2013	-3.71	7557.50	USBR
01/15/2014	-3.80	7557.59	USBR
02/04/2014	-3.87	7557.66	USBR
03/06/2014	-3.92	7557.71	USBR
04/22/2014	-4.07	7557.86	USBR
05/15/2014	-4.09	7557.88	USBR
06/15/2014	-4.18	7557.97	USBR
06/24/2014	-4.07	7557.86	USBR
08/11/2014	-3.72	7557.51	USBR
11/13/2014	-3.52	7557.31	USBR
02/05/2015	-3.79	7557.58	USBR
03/15/2015	-3.72	7557.51	USBR
04/15/2015	-3.94	7557.73	USBR
05/07/2015	-3.97	7557.76	USBR
05/24/2015	-4.12	7557.91	USBR
06/15/2015	-4.19	7557.98	USBR
07/01/2015	-4.18	7557.97	USBR
07/08/2015	-4.32	7558.11	USBR
08/12/2015	-4.06	7557.85	USBR
09/15/2015	-3.88	7557.67	USBR
10/15/2015	-3.75	7557.54	USBR
11/12/2015	-3.75	7557.54	USBR
12/15/2015	-3.96	7557.75	USBR
01/15/2016	-4.04	7557.83	USBR
02/09/2016	-4.05	7557.84	USBR
03/15/2016	-4.12	7557.91	USBR
04/15/2016	-4.22	7558.01	USBR
05/16/2016	-4.26	7558.05	USBR
06/15/2016	-4.15	7557.94	USBR
07/15/2016	-3.81	7557.60	USBR
08/10/2016	-3.58	7557.37	USBR
09/15/2016	-3.38	7557.17	USBR
10/19/2016	-3.40	7557.19	USBR
11/15/2016	-3.48	7557.27	USBR
12/15/2016	-3.65	7557.44	USBR
01/15/2017	-3.83	7557.62	USBR
02/09/2017	-3.84	7557.63	USBR
03/15/2017	-3.92	7557.71	USBR
04/15/2017	-4.07	7557.86	USBR
05/10/2017	-4.07	7557.86	USBR
06/15/2017	-4.05	7557.84	USBR
07/15/2017	-3.82	7557.61	USBR
08/15/2017	-3.72	7557.51	USBR
09/15/2017	-3.62	7557.41	USBR
10/15/2017	-3.63	7557.42	USBR
11/16/2017	-3.67	7557.46	USBR
12/15/2017	-3.78	7557.57	USBR
01/15/2018	-3.87	7557.66	USBR
02/08/2018	-3.91	7557.70	USBR
03/15/2018	-4.05	7557.84	USBR
04/15/2018	-4.06	7557.85	USBR
05/16/2018	-4.07	7557.86	USBR
06/15/2018	-4.00	7557.79	USBR
07/15/2018	-3.74	7557.53	USBR
08/14/2018	-3.48	7557.27	USBR
09/15/2018	-3.32	7557.11	USBR
10/15/2018	-3.32	7557.11	USBR
11/15/2018	-3.44	7557.23	USBR
12/15/2018	-3.60	7557.39	USBR
01/15/2019	-3.78	7557.57	USBR
02/14/2019	-3.81	7557.60	USBR
03/15/2019	-3.92	7557.71	USBR
04/15/2019	-3.96	7557.75	USBR
05/23/2019	-4.02	7557.81	USBR
06/15/2019	-3.99	7557.78	USBR
07/15/2019	-3.87	7557.66	USBR
08/13/2019	-3.72	7557.51	USBR
09/15/2019	-3.47	7557.26	USBR
10/15/2019	-3.39	7557.18	USBR
11/13/2019	-3.41	7557.20	USBR
12/15/2019	-3.61	7557.40	USBR
01/15/2020	-3.73	7557.52	USBR
02/18/2020	-3.81	7557.60	USBR
03/15/2020	-3.86	7557.65	USBR
04/15/2020	-3.93	7557.72	USBR
05/06/2020	-3.92	7557.71	USBR
06/15/2020	-3.92	7557.71	USBR
07/16/2020	-3.76	7557.55	USBR
08/11/2020	-3.62	7557.41	USBR
09/28/2020	-3.47	7557.26	USBR
10/15/2020	-3.54	7557.33	USBR
11/03/2020	-3.57	7557.36	USBR
12/12/2020	-3.83	7557.62	USBR
01/15/2021	-3.89	7557.68	USBR
02/09/2021	-3.92	7557.71	USBR
03/15/2021	-3.98	7557.77	USBR
04/15/2021	-3.96	7557.75	USBR
05/12/2021	-3.90	7557.69	USBR
06/15/2021	-3.93	7557.72	USBR
07/15/2021	-3.85	7557.64	USBR
08/19/2021	-3.65	7557.44	USBR
09/15/2021	-3.49	7557.28	USBR
10/15/2021	-3.43	7557.22	USBR
11/17/2021	-3.46	7557.25	USBR
12/15/2021	-3.57	7557.36	USBR
01/15/2022	-3.60	7557.39	USBR
02/23/2022	-3.70	7557.49	USBR
03/15/2022	-3.74	7557.53	USBR
04/15/2022	-3.84	7557.63	USBR
05/15/2022	-3.81	7557.60	USBR
06/15/2022	-3.72	7557.51	USBR
07/13/2022	-3.74	7557.53	USBR
08/15/2022	-3.45	7557.24	USBR
09/27/2022	-3.31	7557.10	USBR
10/15/2022	-3.37	7557.16	USBR
11/15/2022	-3.46	7557.25	USBR
12/28/2022	-3.60	7557.39	USBR
01/15/2023	-3.66	7557.45	USBR
02/15/2023	-3.73	7557.52	USBR
03/08/2023	-3.71	7557.50	USBR
04/15/2023	-3.76	7557.55	USBR
05/16/2023	-3.80	7557.59	USBR
06/15/2023	-3.86	7557.65	USBR
07/14/2023	-3.66	7557.45	USBR
08/22/2023	-3.32	7557.11	USBR
09/15/2023	-3.29	7557.08	USBR
10/15/2023	-3.29	7557.08	USBR
11/15/2023	-3.37	7557.16	USBR
12/15/2023	-3.47	7557.26	USBR
01/15/2024	-3.62	7557.41	USBR
02/15/2024	-3.61	7557.40	USBR
03/15/2024	-3.65	7557.44	USBR
04/15/2024	-3.72	7557.51	USBR
05/13/2024	-3.76	7557.55	USBR
06/15/2024	-3.75	7557.54	USBR
07/15/2024	-3.61	7557.40	USBR
08/29/2024	-3.39	7557.18	USBR
09/15/2024	-3.35	7557.14	USBR
10/15/2024	-3.30	7557.09	USBR
11/15/2024	-3.45	7557.24	USBR
12/04/2024	-3.39	7557.18	USBR
01/16/2025	-3.51	7557.30	USBR
02/19/2025	-3.59	7557.38	USBR

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Well NA04001102BAA3 EW-36C-2 (EW36C2)Confined

View Digital Orthophoto Quadrangle for this area

Water-level Data

2019 to Present

1967 to Present

Well NA04001102BAA3 EW-36C-2 (EW36C2)
Confined