Lake water level report
O'Brien - 18022700
Crow Wing County
Water Level Data
Period of record: 07/29/1938 to 05/30/2018
# of readings: 572
Highest recorded: 1235.44 ft (04/27/1983)
Lowest recorded: 1233.65 ft (10/28/1941)
Recorded range: 1.79 ft
Last reading: 1234.91 ft (05/30/2018)
Ordinary High Water Level (OHW) elevation: 1236.1 ft
Datum: NGVD 29 (ft)
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Last 10 years of data, click to enlarge.
Benchmarks
| Elevation: 1237.38 ft | Datum: NGVD 29 (ft) |
| Date Set: 06/09/1977 | Location: T137R27S23 |
| Description: Top Left end of Left upstream abutment of outlet dam on South end of lake. | |
| Elevation: 1241.18 ft | Datum: NGVD 29 (ft) |
| Date Set: 06/04/2008 | Location: T137R27S23 |
| Description: Horizontal 3/8" X 8" spike 0.6' above ground in the W-SW side of a 1.5' oak, on a knob of ground in the center of a cleared area, 20' E-NE of the edge of Pine Creek Trail and 55' South of the southerly of the two metal arch culverts under Pine Creek Trail, near outlet. | |
| Elevation: 1244.84 ft | Datum: NGVD 29 (ft) |
| Date Set: 06/30/1992 | Location: T137R26S18 |
| Description: Found 2018. Horizontal 3/8" x 8" spk in NW base of 2.0' White Pine, on top of road bank, 15' S-SW of centerline of Tamarack Rd, and 199' E-SE of concrete boat ramp to O'Brien Lake (18-227), at public access, 36820 Tamarack Rd, Crosslake. | |