Lake water level report
Rock - 03029300
Becker County
Water Level Data
Period of record: 07/17/1995 to 05/31/2018
# of readings: 299
Highest recorded: 1441.69 ft (05/20/2009)
Highest known: 1441.9 ft
Lowest recorded: 1438.3 ft (08/25/2008)
Recorded range: 3.39 ft
Last reading: 1440.13 ft (05/31/2018)
Ordinary High Water Level (OHW) elevation: 1440 ft
Datum: NGVD 29 (ft)
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Benchmarks
Elevation: 1439.78 ft | Datum: NGVD 29 (ft) |
Date Set: 06/28/2006 | Location: T140R40S17 |
Description: Top right end of right downstream abutment of dam at outlet. (The dam is in very poor condition, but the downstream end of the right abutment appears to be intact). |
Elevation: 1441.05 ft | Datum: NGVD 29 (ft) |
Date Set: 07/12/1995 | Location: T140R40S17 |
Description: Found 2008. G & F BM #2 from sounding map B-68, High point of 4' steel culvert at north end of lake connection Rock and Rice lakes. |
Elevation: 1446.82 ft | Datum: NGVD 29 (ft) |
Date Set: 05/15/2008 | Location: T140R40S20 |
Description: Found 2018 for use only with prior permission from landowner. 3/8" x 8" spike, 1.0' above ground in East side of light pole between two sheds, approximately 50' from water's edge, at private residence, 24823 Broadway Ave, Detroit Lakes. |
Elevation: 1445.37 ft | Datum: NGVD 29 (ft) |
Date Set: 06/28/2006 | Location: T140R40S29 |
Description: At public access, horizontal 3/8" x 8" spike 0.4' above ground in NNE base of a twin ash (both trunks are 0.8'), 64' west of where road into access splits, 48' NE of SW corner of access and 4' SW of a basswood clump. Elevation=1446.36 NAVD 88 as per GPS survey 2/5/15. |
Elevation: 1442.61 ft | Datum: NGVD 29 (ft) |
Date Set: 02/19/1997 | Location: T140R40S29 |
Description: At PA on WSW shore of lake, partially bent 3/8 x 8" spk at a 45 deg angle, 0.7' above grd in lkside of a triple birch at W fence boundary of PA, 25-30' W of CL rd leading to boat ramp. Tree appears to be dying, approx 50' from WE. |