GROUND-WATER LEVELS

LA PLATA COUNTY

371422107473301 NB03400807BBA1 ROYCE

LOCATION.--Lat 37°14'22", long 107°47'33", in NW 14 NW 14 sec.7, T.34 N., R.8 W., La Plata County, Hydrologic Unit 14080104, 0.5 mi north of the Florida Mesa School, 7.0 mi southeast of Durango, Colo.

AQUIFER.--Animas Formation of Paleocene-Upper Cretaceous age. Aquifer code: 125ANMS.

WELL CHARACTERISTICS.--Drilled, unused well, diameter 3 in., depth 110 ft.

INSTRUMENTATION.--Water-level recorder with satellite telemetry.

DATUM.--Elevation of land-surface datum is 7,000 ft above NGVD of 1929, from topographic map. Measuring point: screw in recorder shelf above well casing, 3.00 ft above land-surface datum.

PERIOD OF RECORD.--June 1995 to September 2003 (discontinued). For a complete listing of historical data available for this site, see http://waterdata.usgs.gov/co/nwis/inventory/?site_no=3714221074733

EXTREMES FOR PERIOD OF RECORD.--Highest water level 19.70 ft below land-surface datum, Oct. 13-15, 17, 18, 2001; lowest, 31.76 ft below land-surface datum, May 28, 2003.

EXTREMES FOR CURRENT YEAR.--Highest water level 24.73 ft below land-surface datum, Sept. 10; lowest, 31.76 ft below land-surface datum, May 28.

Depth to water level, feet below land surface 

WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	28.93	29.42	30.15	30.38	30.65	30.61	31.23	31.46	31.62	29.90	26.49	24.81
2	28.93	29.43	30.15	30.41	30.62	30.63	31.25	31.45	31.57	29.80	26.37	24.83
3	28.94	29.47	30.15	30.42	30.64	30.64	31.26	31.44	31.53	29.71	26.23	24.84
4	28.97	29.61	30.17	30.43	30.65	30.64	31.28	31.43	31.49	29.61	26.14	24.86
5	29.00	29.70	30.18	30.43	30.64	30.65	31.28	31.43	31.47	29.52	26.06	24.87
6	29.03	29.78	30.19	30.45	30.65	30.68	31.29	31.44	31.44	29.42	25.98	24.87
7	29.06	29.82	30.20	30.46	30.66	30.71	31.31	31.43	31.39	29.32	25.90	24.88
8	29.07	29.82	30.22	30.46	30.66	30.73	31.34	31.43	31.36	29.21	25.81	24.90
9	29.10	29.74	30.24	30.46	30.67	30.76	31.34	31.43	31.31	29.12	25.72	24.84
10	29.12	29.76	30.24	30.47	30.69	30.78	31.34	31.44	31.27	29.02	25.66	24.75
11	29.14	29.79	30.25	30.46	30.69	30.79	31.35	31.45	31.23	28.92	25.59	24.79
12	29.17	29.83	30.26	30.48	30.70	30.82	31.36	31.46	31.17	28.80	25.52	24.82
13	29.19	29.83	30.28	30.49	30.66	30.85	31.37	31.47	31.14	28.67	25.45	24.85
14	29.20	29.85	30.29	30.50	30.63	30.86	31.38	31.48	31.10	28.55	25.39	24.90
15	29.22	29.89	30.29	30.51	30.65	30.87	31.37	31.47	31.05	28.42	25.34	24.94
16	29.23	29.92	30.29	30.53	30.67	30.84	31.39	31.48	31.00	28.30	25.27	24.97
17	29.25	29.93	30.23	30.53	30.67	30.77	31.39	31.50	30.96	28.20	25.20	24.99
18	29.26	29.96	30.23	30.54	30.67	30.77	31.40	31.51	30.89	28.09	25.13	25.03
19	29.28	29.99	30.26	30.55	30.68	30.81	31.41	31.54	30.82	27.99	25.01	25.06
20	29.29	30.01	30.27	30.55	30.68	30.84	31.44	31.56	30.75	27.88	24.98	25.09
21	29.31	30.02	30.27	30.56	30.69	30.86	31.44	31.57	30.70	27.76	24.96	25.13
22	29.33	30.05	30.28	30.61	30.69	30.89	31.44	31.62	30.64	27.64	24.94	25.17
23	29.33	30.04	30.29	30.64	30.70	30.92	31.43	31.67	30.57	27.52	24.91	25.21
24	29.35	30.05	30.30	30.64	30.72	30.94	31.45	31.69	30.50	27.41	24.87	25.24
25	29.35	30.07	30.31	30.65	30.69	30.97	31.47	31.71	30.42	27.29	24.86	25.28
26	29.36	30.10	30.33	30.66	30.63	30.99	31.49	31.73	30.33	27.18	24.84	25.31
27	29.34	30.12	30.35	30.66	30.62	31.00	31.49	31.73	30.25	27.06	24.83	25.35
28	29.35	30.14	30.35	30.65	30.60	31.06	31.48	31.74	30.17	26.93	24.83	25.39
29	29.36	30.15	30.35	30.66	---	31.12	31.47	31.72	30.09	26.81	24.82	25.43
30	29.38	30.16	30.37	30.66	---	31.17	31.46	31.69	30.00	26.69	24.80	25.47
31	29.40	---	30.38	30.66	---	31.21	---	31.66	---	26.59	24.79	---
MEAN	29.20	29.88	30.26	30.53	30.66	30.84	31.38	31.54	30.94	28.30	25.38	25.03
MAX	29.40	30.16	30.38	30.66	30.72	31.21	31.49	31.74	31.62	29.90	26.49	25.47
MIN	28.93	29.42	30.15	30.38	30.60	30.61	31.23	31.43	30.00	26.59	24.79	24.75