Lake water level report
South Turtle - 56037700
Otter Tail County
Water Level Data
Period of record: 09/21/1988 to 05/01/2025
# of readings: 975
Highest recorded: 1322.58 ft (05/29/2006)
Highest known: 1325.8 ft
Lowest recorded: 1317.33 ft (09/21/1988)
Recorded range: 5.25 ft
Last reading: 1320.01 ft (05/01/2025)
Ordinary High Water Level (OHW) elevation: 1318.4 ft
Datum: NGVD 29 (ft)
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Last 10 years of data, click to enlarge.
Benchmarks
| Elevation: 1323.55 ft | Datum: NGVD 29 (ft) |
| Date Set: 09/21/1988 | Location: T133R41S36 |
| Description: In-place horizontal 3/8" x 8" spike, 1.0' above ground, in SE side of 2.0' cottonwood (2009 - stump), on the slope from the lake and 135' SE of centerline of access road [when set in 1988 - 31' NW of centerline of previous access road], at the public access, 22280 Resort Rd, Underwood, on North side of lake. | |
| Elevation: 1323.44 ft | Datum: NGVD 29 (ft) |
| Date Set: 09/21/1988 | Location: T133R41S36 |
| Description: Found 2016. Vertical 3/8" x 8" spike, 0.5' above ground, in notched South root of 3.0' cottonwood (2009 - stump) on slope from lake, 115' SE of centerline of access road in 2013 [when set in 1988 - 52' NW of centerline of previous access road], at the public access, 22280 Resort Rd, Underwood, on North side of lake. | |
| Elevation: 1331.56 ft | Datum: NGVD 29 (ft) |
| Date Set: 01/09/2013 | Location: T133R41S36 |
| Description: Found 2025. Chiseled square on the lakeside edge of centerline of headwall of rock wall at parking/turnaround stop for access ramp, at public access, 26680 Resort Rd, Underwood, on north side of lake. [Note: Add 0.87' to NGVD 1929 elevations to equate to NAVD 88 datum.] | |