HomeMy WebLinkAboutOVERLAND HILLS WEST RF SITE PLAN REVIEW - 38 90D - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORTPRELIMINARY DRAINAGE REPORT
FOR
OVERLAND HILLS WEST
KIM STUART, DEVELOPER
SEPTEMBER 28, 1992
STEWART & ASSOCIATES. INC.
103 SOUTH MELDRUM STREET
FORT COLLINS, COLORADO 80521
303/482-9331
PRELIMINARY DRAINAGE REPORT
OVERLAND HILLS WEST
Overland Hills West is a proposed single—family development situate in
the North z of the Northwest 'I of Section 33, Township 7 North, Range 69 West
of the Sixth P.M., Fort Collins, Colorado, and lying West of Spring Creek.
The site contains 63.09 acres and is zoned RF, Foothills Residential. It is
bounded on the north by a line which is the extension of Horsetooth Road and
on the east by Spring Creek and the proposed extension of Overland Trail.
The adjacent property on the north and south is privately owned land, and the
adjacent property on the west is the City of Fort Collins owned Pine Ridge
Open Space.
There is a ridge running northwesterly near the west boundary which forms
a valley to the west of the ridge and is shown on the Drainage Plan as Basin
"B" and contains 13.33 acres. It drains to the southwest and eventually also
drains to Spring Creek. Basin "C" is the land between the centerline of
proposed Overland Trail and Spring Creek. Basin "C" contains 3.76 acres.
The balance of the property shown as Basin "A" contains 46.00 acres.
Basin "A" slopes relatively steeply from the ridge on the west to Spring Creek
on the east. Basin "A" has a cluster development of 63 lots on 19.14 acres
with the balance of 26.86 acres remaining undisturbed open space.
There will not be any onsite storm water detention since Spring Creek
flows through the property. The runoff will be carried by the curb and gutter
of the local streets. The runoff from Lots 37 through 63 will be directed
from the streets to an existing Swale. The runoff will then flow in the swale
to a proposed culvert under Overland Trail and then discharge into Spring Creek.
The runoff from Lots 1 through 36 will also flow in the gutters to two proposed
culverts under Overland Trail and discharge into Spring Creek.
Because of the steepness of the existing ground, some of the streets will
have a slope up to 8%. Rainfall and wind erosion control will be very
important. Great care will be taken to not disturb any more ground cover than
is necessary to construct the streets and utility lines. The disturbed areas
will be reseeded with a straw mulch that, will be crimped. Straw bale dikes
will be used across the drainage swales during the construction period. Rock
filters will be used after the inlets are constructed. Perhaps some very steep
slopes will need fabric protection.
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Richard A. Rutherford, P.E. & L.S.
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