The study took a comprehensive look at the aspects of the flooding problem and its solution(s). Aspects of the study were categorized into engineering, environmental, business/financial, and communication disciplines. Scope of Work elements included the following.
Task 1: Quantifying and Delineating Flood Risk to define the quantity, areal extent and depth of flooding associated with the Cypress Creek overflow and the locally generated runoff.
Task 2: Identifying Mitigation Strategies
- To estimate the size of storage/conveyance facilities necessary to respond to changing land uses from undeveloped (prairie) to suburban use.
- To evaluate the sizing and practicality of implementing alternative strategies to manage the volume and peak rate of runoff in the study area, including runoff in Cypress Creek and the Addicks watershed, in both Waller County and Harris County.
Task 3: Benefits of Prairie Restoration for Flood Control to determine the flood retardation benefits associated with prairie grasslands, in terms of both infiltration and time of concentration.
Task 4: Identifying critical conservation areas to define those tracts of land that, for reasons of unique flood management potential or environmental habitat or wetland characteristics, would be preferred to remain as open space for environmental restoration.
Task 5: Cost/Benefit Analysis to determine the value in establishing a regional drainage plan for the watershed(s), and to quantify that value in terms of avoided costs and benefits to the community.
Task 6: Project Financing and cost Pro Forma to develop alternative strategies for financing a regional plan and identifying what roles and responsibilities public, private, and non-profit interests would commit to work together to implement any strategy.
Task 7: Public Outreach Program to communicate to the public the scope of activities being considered by this planning effort and to solicit suggestions that may be incorporated into the planning study.
Task 8: Final Report to summarize the findings of all investigations into a final report for adoption by Harris County Commissioners Court and potentially Waller County Commissioners Court.
The study effort was completed in October 2014, and the Flood Control District submitted the draft Cypress Creek Overflow Management Plan study report to the Texas Water Development Board (TWBD) at that time. After a review period, the TWBD accepted the report in September 2015.