HomeMy WebLinkAboutDrainage Reports - 02/05/1985t
James AH. Stewart and Associates, Inc.
Consulting Engineers and Surveyors
Laboratory:
214 North Howes Street
301 Lincoln Court
P.O. Box 429
- P.O. Box 429
Fort Collins, Colorado 80522 -
Fort Collins, Colorado 80522
(303) 482.9331
(303) 484.6309
DRAINAGE REPORT FOR BARNES SUBDIVISION
The Barnes Subdivision is a proposed single family subdivision containing
4.6 acres and lies within a drainage basin that is included in the Canal
Importation Study. It has an existing thalweg running from West to East
near the North end of the Subdivision. There is approximately 110 acres
lying upstream in the drainage basin that will discharge into the thalweg
at the historic rate. The drainage basin is shown on the enclosed map.
The off site drainage will be routed through the proposed detention pond.
The calculations and mass diagram for the runoff from the proposed
subdivision are also enclosed. A 24,000.cubic foot detention pond was
designed at the Northeast corner of the subdivision. The allowable outlet
rate is. 1.1.cubi.c feet per second. The two 18 inch reinforced concrete
pipes vi'll carry the 14.3 c.f.s. of runoff from upstream through the
pond'.. The pipes will be constructed from the West line of the subdivision
to the East line of Locust Grove Court.
Richard A. Rutherford, P.E. & L.S.
Secretary/Treasurer
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COMPUTATIONS
James H. Stewart roc Associates, Inc. 214 N. Howes St. Ft. Collins, CO 80521 - (303) 482-9331
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