Title
Resolution- A Resolution Authorizing the Director of Public Works to Submit a Grant Application to the Texas Water Development Board (TWDB) for Grant Funds to Address Flood Protection Planning Within the Hogpen Branch Watershed; and Authorizing the Director of Public works to Execute a Contract With the TWDB if the Application is Approved. $149,963.00 from Drainage Bond Funds
Requested Action
The approval of a resolution to apply for grant funds to complete an update study for the Hogpen Branch watershed.
Recommendation
The Environmental Staff recommends the approval of the resolution to apply for grant funds to complete an update study for the Hogpen Branch watershed and the authorization of funding if the grant is approved for an amount from the City not to exceed $149,963. The total project cost is proposed as $249,939 with 40% covered by the Texas Water Development Board and the other 60% paid by the City. This is a reimbursable grant.
Description/History
The City of Mansfield Hogpen Branch Master Drainage Plan was completed in March 1999. This Master Drainage Plan identified several capital improvement projects to reduce flood risk at intersections and to homes throughout this watershed.
Flood prone properties have been purchased and houses removed, and two regional detention basins have been constructed within the watershed based on the recommendations of this Master Drainage Plan. Additional properties have been purchased for a third detention basin. The benefits of the constructed changes have been modeled, but only in the upper reaches of the watershed.
At least two additional detention ponds and several miles of full concrete channelization are also recommended in the current study.
Justification
An update to the Master Drainage Plan should be completed prior to beginning of additional capital improvement projects. It is necessary to update the lower reaches of the model to reflect the currently constructed improvements. The areas available for the additional detention is less than what was assumed in 1999, and assumptions about the channel improvements will not meet current U.S. Corps of Engineers permit requirements.
This update plan will re-evaluate the cost/benefit of all future recommendations and re-establish priorities for projects, as well as evaluate the benefits of currently constructed improvements in the downstream areas.
The Texas Water Development Board provides financial assistance, through the Flood Protection Planning Grant, for communities to complete studies of this nature.
A Resolution is attached for Council’s consideration.
Funding Source
The funding source will be the Drainage Bond Funds.
Prepared By
Howard Redfearn, Environmental Manager
817-276-4240