REVISIONS HISTORY - The discrete water level measured on December 2, 2019 was revised on April 14, 2020, based on the need to apply a water-level tape calibration correction. Prior to June 8, 2023 the datum of the site was 3889.70 ft above NGVD29 (determined via levels). Discrete water levels have previously been published on NWIS Web using old datum(s).