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Title
Professional services contract with McKim and Creed in the amount of $379,925 to provide engineering, surveying and aerial lidar services to update the City's Drainage Master Plan projects including Drainage Problem Assessment and Neighborhood Flooding
Presenter
Romin Khavari, City Engineer
Recommended Action
Approve
Analysis
This study evaluates and updates the projects proposed as part of the City Wide Drainage Plan studies,including drainage Problem assessment around the City and specific Neighborhood flooding during the May 2015 rainfall storms.
A substantial amount of previous work has been completed on City Wide Drainage Master Planning to define and prioritize drainage and floodplain needs throughout the City.
This study provides three items of study as approved as part of the FY 2016 CIP:
1. Drainage Problem Area Assessment:
The existing GPS vertical survey control monuments will be verified as to accuracy and a new Lidar for one foot contours shall be developed for the entire City that will reflect changes that have resulted from development and city projects to establish new topographic information to be then used as part of drainage evaluations. Based on the new Lidar, citywide inundation and drainage flow accumulation mapping will be performed to estimate areas of potential surface flow flooding. A detailed study will be performed specifically for the Indian Hills and Shady Grove areas of the City which have minimal storm drainage systems and a master drainage plan will be developed and provided for future consideration.
2. Neighborhood Flooding:
As part of the May 2015 floods, the City has identified 8 public drainage locations that need to be addressed. Each of these 8 locations will be evaluated for feasible solutions to reduce the risk of flooding and concept level project plans with cost estimates will be developed for consideration for FY 2017 CIP programming for detail design and construction. The sites are as l...
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