Lake water level report
Little Rock - 05001300
Benton County
Water Level Data
Period of record: 05/25/1985 to 08/31/2024
# of readings: 1209
Highest recorded: 1018.96 ft (04/10/1997)
Highest known: 1021.3 ft (April 1965)
Lowest recorded: 1012.2 ft (08/31/2019)
Recorded range: 6.76 ft
Last reading: 1014.93 ft (08/31/2024)
Ordinary High Water Level (OHW) elevation: 1016 ft
Datum: NGVD 29 (ft)
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Last 10 years of data, click to enlarge.
Benchmarks
| Elevation: 1024.12 ft | Datum: NGVD 29 (ft) |
| Date Set: 04/11/1989 | Location: T37R31S15 |
| Description: Found 2024. Top of Mn-DOT concrete R/W marker located along north property boundary of the public access located at Little Rock Lake on the south side of HWY 10. The monument is located where the entrance road divides into the parking area, approximately 20 ft east of the blacktop entrance road. | |
| Elevation: 1024.96 ft | Datum: NGVD 29 (ft) |
| Date Set: 05/02/1991 | Location: T37R31S14 |
| Description: MnDOT BM in SE corner of W bound bridge of Highway 10 on the south end of lake. | |
| Elevation: 1021.33 ft | Datum: NGVD 29 (ft) |
| Date Set: 10/14/1997 | Location: T38R31S34 |
| Description: Brass cap located in the SE bridge abutment of bridge No.05512 over Little Rock Creek where it enters into Little Rock Lake on the North end. Bridge is located on County RD 2. | |