USGS Water-Year Summary 2023
340439117173905 001S004W22D005S, San Bernardino Valley Municipal Water District Cluster Well, at San Bernardino, CA
California Coastal Basin aquifers
LOCATION - Lat 34°04'38.68", long 117°17'42.54" referenced to North American Datum of 1983, in sec.00, T.1 S., R.4 W., San Bernardino County, CA, Hydrologic Unit 18070203, in Rancho Muscupiabe Grant, near Orange Show Road and E Street, at the Headquarters of the San Bernardino Valley Municipal Water District, in San Bernardino.
REVISIONS HISTORY -
A migrated, open ended '***' qualifier was removed from the period of 9/14/2015 22:45 to 4/5/2017 10:45. No unit values were affected by revision. Since 9/14/2015 this site is subject to surface water runoff during precipitation events and is very slow to recover after flooding. Unit values were removed from 10/4/2015 to 10/4/2017. On 2/22/2018 discrete water levels from 9/22/2015 to 12/4/2017 were recoded with an ‘M’ status.
Elevation
data for Continuous and Discrete Water-levels from beginning of record until
July 6, 2020 were revised to reflect elevation of site.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 544.5 ft. Upper casing diameter 2 in; top of first opening 555 ft, bottom of last opening 574 ft.
DATUM - Land-surface datum is 977.44 ft above North American Vertical Datum of 1988. Measuring point: Top of 2 inch PVC casing, black mark on south side (below LSD), 0.15 ft below land-surface datum, Oct. 30, 1990 to Jan. 17, 2020; Top of concrete vault (above LSD), 0.4 ft above land-surface datum, Oct. 30, 1990 to Jan. 17, 2020; Top of 2in PVC casing, 0.1 ft below land-surface datum, Jan. 16, 2020 to present.
PERIOD OF RECORD - Water year 1991 to current year.
GAGE - Electronic data logger.
PERIOD OF DAILY RECORD - November 1991 to April 1992, June 1992 to June 1993, August 1993 to October 1993, December 1994 to August 2000, October 2000 to December 2001, February 2002 to September 2002, February 2003 to March 2005, May 2005 to September 2015.
EXTREMES FOR PERIOD OF RECORD - Highest water levels recorded, 9.94 ft below land surface, November 14, 1991. Lowest water levels recorded 154.24 ft below land surface, December 8, 2022.