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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2025
313955110104302 D-20-21 26BCC2 [CHM-2D]
LOCATION - Lat 31°39'55", long 110°10'43" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 NW 1/4 sec.26, T.20 S., R.21 E., Cochise County, AZ, Hydrologic Unit 15050202,
REVISIONS HISTORY -
Revision Statement for Water Level Measurement Updates Due to Vertical Datum Update
Site Name: 313955110104302 D-20-21 26BCC2 [CHM-2D]
Date of Revision: 3/6/2025
Previous Vertical Datum: 3900' above NAVD88
New Vertical Datum: 3925.05 above NAVD88
Reason for Revision: New value represents much more accurate GPS survey methodology than the original map based method.
List of Affected Measurements:
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Method of Adjustment: Values recalculated using conversion factor derived from the new vertical datum.
Effective Date for Revisions: 3/6/2025
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 35 ft. Upper casing diameter undefined; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 3,900 ft above North American Vertical Datum of 1988. Measuring point: TOP OF 1.5" GALV CASING (PIPE), 1.0 ft above land-surface datum, Jul. 9, 2021 to present.
