HomeMy WebLinkAbout7.A. June 19, 2014 Stormwater Event umbb—I& As General Business
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7. A.
SHAKOPE
TO: Mayor and City Council
Mark McNeill, City Administrator
FROM: Bruce Loney,Public Works Director
DATE: 06/24/2014
SUBJECT: June 19 2014 Stormwater Event
Action Sought
BACKGROUND
On the morning of June 19,2014,the City of Shakopee experienced a severe rain storm event.Most rain gauges
indicated a 5.5"rainfall total and from most estimates was in a 3 to 4 hour period.
Previously,the area had experienced several inches of rainfall thus saturating the ground and filling waterbodies
such as wetlands and ponds to their overflow levels.
From the extreme weather cycle which records indicate the wettest first months of the year,the City experienced
flooding in 7 areas. These circles are shown on the attached map and as described as follows:
1. Vierling Drive&Thistle Lane-flooding of intersection.
2.Patterson Drive-channel overflowed by adjacent house.
3.Blue Lake Channel south of Valley View Road-channel overflowed to the north flooding Valley View Road.
4.Blue Lake Channel overflow down Independence Drive to Greenfield Pond then overflowed to Wyndam
Drive properties.
5. Channel overflow on Valley View Road west of Pheasant Run Street.
6.CR 16 channel overflow of Prior Lake channel damaging trails and roadways.
7.Boiling Springs Lane Pond overflow flooding residential properties.
Staff will give a short presentation on the flooding areas and discuss options on improving the draining system.
1. Vierling&Thistle-staff will review the hydraulic model and see what improvements can be made to the
Upper Valley Drainage system.
2.Patterson Drive channel-a storm water project is included for 2015 for the area,which includes this area.
3. Channel overflow on Valley View Road west of Pheasant Run Street-need to make improvements on
preventing debris from clogging pipe in Valley View Road.
4.Blue Lake Channel-a study was authorized by Council earlier this year and the study needs to be completed
with recommendations on improvements to be done.
S.Flooding in Wyndam Drive area-consider additional pipes in Greenfield Park or emergency overflow pipe in
Shakopee Gravel Mine.
6. CR 16 drainage-a new and larger culvert should be considered.
7.Boiling Springs Lake pond and wetland-the City has an agreement to connect to the Savage Storm sewer
system up to 4 cubic per second. Consider a 2015 storm sewer project to extend a pipe to this area.
Staff will review the areas with Council and propose projects for the 2015-2019 CIP.
Attachments: Map
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