AGENDA #5c

 

MEMORANDUM

 

TO:                  Mayor and Town Council

 

FROM:            W. Calvin Horton, Town Manager

 

SUBJECT:       Report on Proposed Schedule for Response to Stormwater Issues in Cedar Hills Drive Area

 

DATE:             June 24, 2002

 

This report provides information about the schedule for performing a drainage analysis of Cedar Fork Creek in the Cedar Hills Drive area.

 

BACKGROUND

 

As a part of the Cross Creek subdivision approval process, the Council requested that Town staff perform a drainage analysis on Cedar Fork Creek in the Cedar Hills Drive area.  Specific concerns were expressed about the adequacy and performance of an existing corrugated metal culvert under Cedar Hills Drive downstream of the Cross Creek development.  Please see the attached map.

 

DISCUSSION

 

Cedar Fork Creek extends from the vicinity of the Timberlyne Shopping Center to Eastwood Lake. It generally parallels Weaver Dairy Road prior to entering a wooded area upstream of Cedar Hills Drive. This wooded area is where Cross Creek Subdivision will be developed. Immediately downstream of this area is a single-family residence with a history of yard flooding that sometimes encroaches up to and around the house.

 

Under its Drainage Assistance Program, the Town enlarged driveway pipes and cleared the drainage channel along Cedar Hills Drive adjacent to the above referenced property..  Although these improvements have been completed and the Cross Creek development design included stormwater management analysis and best management practices, there remains a concern that the culvert under Cedar Hills Drive may need improvements.

 

The US Army Corps of Engineers has agreed to perform a flood study of Booker, Bolin and Cedar Fork creeks in the fall of this year. This study will determine 100-yr. flood elevations for these creeks and designated tributaries within the study limits, including Cedar Fork Creek up to Cedar Hills Drive. This study data will provide useful information for a detailed analysis of the culvert in question.

 

 

 

CONCLUSION

 

We anticipate filling a currently vacant Engineering Technician position by the fall of this year.  This technician will be assigned multiple tasks, including coordination of the Corps’ study and this associated drainage culvert analysis. The Corps’ flood study is anticipated to be complete by October 2002, and we will utilize the study data for our analysis of the Cedar Hills Drive culvert.  We expect to report back to the Council with the results of our culvert analysis by the end of calendar year 2002.  

 

ATTACHMENTS

 

1.         Cedar Hills Drive Area Map (p. 3).