DNR Requisition for Surface Water/Hydrographic ServicesNA- 02684 -03
Rev. 04/94
Region 6
REQUISITION FOR SURFACE
INNESOTA
WATER/HYDROGRAPMC
Department of Natural Resources
SERVICES
Division of aters
Fi
L ake No.
tland 10 -132W OHW Study
r7Z
1 10 -132W
City
County CAR VER
Req. No.
Chanhassen
- +der�
L
Sec.
Twp.
Rng.
Clued No.
3
116
23
S1 5a
State Problem or Situation (provide detailed information)
The City of Chanhassen has plans to construct a new outlet for wetland 10 -132W. The wetland is
currently draining to the Bluff Creek watershed. The proposed outlet would change the drainage of the
wetland to the Minnehaha Creek watershed. This change will require an official change in the
boundaries of the watershed districts.
Note: According to Jim Wiczek (797 -3054) at MnDOT, MnDOT installed a culvert through Trunk Highway 41 (on west side of
10 -132W) in 1953. It appears that the pipe was intended to be an equalizer since it was only one -half foot below the old
roadway. The area on the west side of Trunk Highway 41 used to be pert of the same wetland. MnDOT may have additional
information on the location of the old culvert.
Services Requested (Attach map as necessary)
1. Determine OHW of wetland 10 -132W
2. Determine location and elevation of the runout of the basin
3. Document all water level indicators found around basin
Three possible benchmarks are shown in the attached materials. Further benchmarks can be obtained
from George Martin, MnDOT 797 -3108.
Metro staff are available to assist on this survey, if needed (772 - 7910).
Various maps and photos are attached to illustrate the location of the basin and various points of
interest.
Landowners: Dave Gestach
Permission obtained for access: Permission to enter the land has been obtained from Dave Gestach. Dave
should be notified On the day the work will be done (448- 3332).
Requested By:
rate,
Phone No.
Ceil Strauss, Area Hydrologist
11/23/94
(612) 772 -7910
Approved By (Regional or Unit Supv.)
Date:
Dale E. Homuth, Regional Hydrologist
Approved
Date:
�{
NA -02630 -02
Rev 3'92
Hydrographic Survey
(INNESOTA
Department of atural Resources
Report
Division of Waters
I ,
Project
Lake No.
Unnamed Wetland
10 -132
City County
Rea. No.
near Chanhassen Carver
95 -59
Sec.
Twp,
Rng,
Watershed
3 and 4
116
23
Mississippi River -Metro
SURVEY DATE: 12/6 and 12/7/94
SURVEY CREW: Scherek, Moll, Woodrich
LAKE SIZE
Meandered Area Acres
® Non - meandered
Planimetered Area 8 Acres
❑ Unknown
DATUM ADJUSTMENT
❑Assumed ❑1912 ®1929 71988 Source:
MN /DOT B.M. 111008 J- 1979"
CONTROL BENCHMARK
Location: 4 mile south of the Jct. of T.H.7
and T.H.41 (NE- SE- SE -NE, Sec. 4)
Elevation: 1008.15
Description: brass disk in concrete monument,
65' west of T.H.41 and 48' north of a
drive to the west (old Ches -mar
drive)
SURVEY WORT: COMPLETED
® levels ❑ topography ❑ cross sections J profiles ®OHW
❑ establish benchmarks ® outlet elevations ❑ other:
WATER LEVELS
Highest Recorded:
Water Surface: 994.83, 12/6/94
Lowest Recorded:
OHW Elev: 995.8
Range:
HlghestKnown:996.4 (distinct stain
OUTLET
on trees)
General Description: considered to be landlocked (SEE NEXT PAGE)
Runout Elevation &Description: highwater runout = 999.1 (low point on ridge at SE side
of wetland)
BENCHMARKS SET
Location:
Elevation:
Description:
Location:
Elevation:
Description:
Prepared By '(,,AA
Idle
Date
John M Scherek " I.1
Survey Crew Supv.
12/12/94
The O.H.W. level is based on the average reduced elevation of the 7 best trees of the 13 which we
documented (elm, ash, cottonwood, and willow). We also recorded distinct stainlines on trees at
995.6 and 996.4. No definite washlines were observed. Some stumps in water indicate a lower
stage of water levels at approximately 990.
The present highwater outlet of the wetland would be to the SE, however, some information
exists indicating the possibility of a previous outlet to the west. Although there is presently no
evidence of a culvert through T.H. 41, information from MN/DOT refers to installation of a
culvert through the highway in 1953. There is another roadway just west of T.H. 41, and we
found a catch basin at the east toe of this road and a culvert running west from the catch basin
under the road. If this catch basin was inplace at the same time the culvert through T.H. 41 was
inplace and functioning, this would have served as an outlet for Wetland 10 -132.
The contours on the USGS quadrangle and the following limited elevations we obtained also
support the possibility of an outlet to the west.
Water level in Wetland 10 -132 (12/6/94) 994.83
Water level in catch basin (12/7/94) 986.24
Bottom on sediment in catch basin (approximate flowline of culvert to the west) 983.6
Water level in ponded area on west side of roadway located immediately
west of T.H. 41 (12/7/94) 985.15
z
� a
}t
i
z
r
'!
_
IN1f
88.91 :, -
EANRNEFA
1
r.
f
REVISIONS DATE
}
I
#
Ln j
g
z
z
t
111
0
_....._..
�, --
z
� a
}t
i
_
IN1f
88.91 :, -
EANRNEFA
PROJECT
REVISIONS DATE
I
IIWfi'C 11111. Ili6 PbI�SPo.'IY AfA
-•
_....._..
�, --
.$
.T
2 DIP WATERMAw
WILLIAM R. ENGELNAROT ASSOC, INC.
MP� by ""°"°"r mT
Rwti+ a a EnglrMC flr
LAKE LU CY ROAD
SEPT, eI
stat.
3
CONSULTING ENGINEERS
!M EET TITLE
MM.
IN940.
NV 9780
1107 BAR FWD RTE 480
...
i
'.
I C .Y
MWESTA %B
9 '�
STORM SEWER
VERT.
t
..
.:
f
+
0
Dme 6' Rep. Na /,..a 6
�
...
F
-
.. -. - . - _ -
... -_...
I00-A
_ _
3
4
S. A. P. No.
194-101-07
Sheet No.
15 of 19 Sheets