USGS Water-Year Summary for Site 10055000

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	Available Parameters
	00062 Elevation, reservoir(Mean) [Elevation, ft (UP&L Co. Datum)]
	62615 Elevation, lake/res, NAVD88(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

10055000 BEAR LAKE AT STATE PARK MARINA NR GARDEN CITY, UT

LOCATION - Lat 41°57'57.30", long 111°23'53.44" referenced to North American Datum of 1983, Rich County, UT, Hydrologic Unit 16010201,

SURFACE-WATER RECORDS

PERIOD OF RECORD - UP&L Datum - October 1903 to June 1906, August 1909 to current year; North American Vertical Datum 1988 (NAVD88) - October 2019 to current year. Records from October 1903 to October 2019 collected by UP&L Co/PacifiCorp Power Company.

GAGE - Staff gage at Bear Lake at Fish Haven, ID from October 1903 to 1906, UP&L datum. Water-stage recorder at Lifton Pumping Station, ID from August 1909 to April 2004, UP&L datum. Staff gage at Bear Lake State Park Marina, Garden City, UT, from April 2004 to October 2019, UP&L datum. Water-stage recorder at Bear Lake State Park Marina, Garden City, UT, from October 2019 to present, NAVD88 and UP&L datum.

COOPERATION - Station operated by the U.S. Geological Survey, in cooperation with the Bear River Commission and Bear Lake Watch.

REMARKS - The Bear Lake elevations measured at State Park Marina reported by the U.S. Geological Survey are referenced to the NAVD 88 datum. The relation of the gage to this datum was established by U.S. Geological Survey personnel who performed two separate GNSS static observations on a local reference mark near the gage location on October 2 and 3, 2019. Utilizing additional GNSS static observations near the Lifton Bench Mark, U.S. Geological Survey personnel determined a difference between the datum of this gage (NAVD88) and the UP&L Co. datum (which has been historically used to quantify the elevation of Bear Lake) to be -6.88 feet. Bear Lake elevations are reported here relative to the NAVD88 datum. Additionally, Bear Lake elevations are reported here relative to the UP&L Co. datum by subtracting 6.88 feet from gage readings.

EXTREMES FOR PERIOD OF RECORD -

Maximum elevation (NAVD 88): 5926.49 ft. 06/28/2020

Minimum elevation (NAVD 88): 5918.99 ft. 10/07/2021