USGS Water-Year Summary 2024
341826116164501 003N007E32D001S
Basin and Range basin-fill aquifers
LOCATION - Lat 34°18'25.38", long 116°16'48.72" referenced to North American Datum of 1983, San Bernardino County, CA, Hydrologic Unit 18100100,
REVISIONS HISTORY -
Water level elevation in NAVD88 timeseries was revised from 10/16/2009 to 11/1/2017. The data was shifted -2.03 ft (downward to a lower elevation) due to an incorrect rating equation that was applied to the timeseries.
Water level elevation in NAVD88 timeseries was revised from 11/10/2021 to 10/25/2023 due to an incorrect conversion to NAVD88 datum and to use a more accurate site elevation. Data was unapproved on 8/16/2024.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 618 ft. Upper casing diameter 40 in; top of first opening 418 ft, bottom of last opening 598 ft.
DATUM - Land-surface datum is 2,542.29 ft above North American Vertical Datum of 1988. Measuring point: MP A TOP OF STEEL CASING, 1.78 ft above land-surface datum, Mar. 24, 1994 to Jan. 13, 2018; Black mark on top of PVC casing, 2.03 ft above land-surface datum, Mar. 12, 2002 to present. Between 1/19/1987 and 12/3/2020 land-surface datum is 2,544 ft above NGVD1929. Between 12/3/2020 and 8/6/2024 land-surface datum is 2,545 ft above NAVD88.