Lake water level report
Sanborn - 40002700
Le Sueur County
Water Level Data
Period of record: 09/08/1958 to 10/19/2020
# of readings: 10
Highest recorded: 1019.38 ft (03/22/2011)
Lowest recorded: 1014.94 ft (10/19/2020)
Recorded range: 4.44 ft
Last reading: 1014.94 ft (10/19/2020)
Ordinary High Water Level (OHW) elevation: 1018.7 ft
Datum: NGVD 29 (ft)
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Last 10 years of data, click to enlarge.
Benchmarks
| Elevation: 1031.35 ft | Datum: NGVD 29 (ft) |
| Date Set: 03/07/2002 | Location: T112R23S26 |
| Description: Found 2020. Horizontal slightly bent 3/8" x 8" spike, 1.1' above grd in East side of a 3.0' oak, on side of steep bank, 57' west of centerline of Public Access entrance road, and 40' North of North edge of parking area, at Public Access on the North side of lake, off 141st Ave/Lake Sanborn Rd, Montgomery. [NOTE: this BM previously had an elevation of 1031.02. A GPS survey with MN/DOT BM "PEPIN 1989" = 1068.37 (1929) on 3/22/11 determined the correct elevation of this BM to be 1031.35. As such, 0.33' must be added to elevations derived from the erroneous elevation of 1031.02.] | |
| Elevation: 1018.6 ft | Datum: NGVD 29 (ft) |
| Date Set: 10/03/2007 | Location: T112R23S35 |
| Description: Top north end of the 36" CMP thru the field road crossing 670 feet downstream of Sanborn Lake, at the Sand Creek outlet; considered short-term BM. [Note: this BM previously had an elevation of 1018.27. A GPS survey on 3/22/11 with MN/DOT BM "PEPIN 1989" = 1068.37 (1929) determined the correct elevation of this BM to be 1018.6.] [Note: Add 0.22' to NGVD 1929 elevations to equate to NAVD 1988 datum.] | |