Nolan Creek Flood Protection Plan – TWDB Grant Opportunity December 6, 2016
Presenter
Presentation Notes
The Texas Water Development Board (TWDB) Flood Protection Planning Program, created in 1991, is a grant program designed to assist political subdivisions in evaluating regional structural and nonstructural solutions to flooding problems. Only regional projects are eligible for this grant. Grants for flood protection planning in our area are limited to 50% of the total cost of the project. A Flood Protection Master Plan provides a mechanism to study structural and non-structural approaches to flood damage reduction.
Nolan Creek Watershed
2012 Drainage Master Plan
Nolan Creek Flood Protection Plan Benefits
• Coordinate additional monitoring stations along Nolan Creek and its the tributaries.
• Develop early warning software.
• Update/amend Special Flood Hazard Area (SFHA) maps.
Presenter
Presentation Notes
Use the developed software and data to create a user friendly interactive map for public use. Included in the map would be warnings of upcoming flood hazards, identification of closed roads, and the ability for the public to sign up for reverse notifications for certain flood prone areas. This type of system is currently in place in some other cities.
Nolan Creek Flood Protection Plan Benefits
• Positions each entity and the watershed for participation in other grant programs to fund some of the projects identified.
• Identify construction projects within each entity that could lead to increased storage capacity & water quality. These projects may assist the City in avoiding issuance of a regulated Total Maximum Daily Load (TMDL) by the TCEQ.
Nolan Creek Watershed
38th
2012 Drainage Master Plan
Presenter
Presentation Notes
1984 = 1006 structures in SFHA (983 in Nolan Creek Watershed) 2008 = 881 structures in SFHA (865 in Nolan Creek Watershed) From 2012 DMP: All prioritized regional detention is in the Nolan Creek Watershed ($104,290,995.00) Strom Drain & Ditch Neighborhood Drainage $2,045,000.00 is in the Nolan Creek Watershed Stream Repair and Floodplain Improvements $4,490,000.00 is in the Nolan Creek Watershed From 2005 DMP: $3,000,000.00 in projects.
Nolan Creek Flood Protection Plan
• Regional Support of Grant Project: ▫ Bell County WCID #6 ▫ Belton ▫ Brazos River Authority ▫ Harker Heights ▫ Nolanville ▫ Killeen
Presenter
Presentation Notes
*Texas Water Development Board Grant Opportunity to fund a Flood Protection Master Plan for the Nolan Creek Watershed. *Grant requires a 50 percent match. *Grant activity spread out over 18 months (2 fiscal years). *Deadline for grant submission was June 17, 2016. Awarded on 08/25/16. Bell County WCID #6 – $15,757 Belton – $12,578 Brazos River Authority – $5,000 Harker Heights – $10,085 Nolanville – $11,000 Killeen - $146,599 CTCOG – In Kind Only $30,000
Nolan Creek Flood Protection Plan Cost of Participation
• CTCOG provided a preliminary cost breakdown for the $462,038 project based on four areas: ▫ Hydrology ▫ Hydraulics ▫ Field survey ▫ Population
• Based on those areas, the City of Killeen’s identified portion is $146,599, which is approximately 63.5% of the required grant match ($231,019).
Presenter
Presentation Notes
Hydrology: Killeen = 27% (31.5 out of 114.6 square miles), Hydrology is the science encompassing the behavior of water as it occurs in the atmosphere, on the surface of the ground, and underground. (Am. Soc. Civil Engineers, 1949, p. 1.) Hydrologic analyses are performed to quantify the volumetric flow rate of water draining from a watershed (i.e., drainage area) over time. Hydraulics: Killeen = 33% (20.2 out of 62.8 miles), Hydraulic analyses are performed to determine the depth of flow, flow velocity, and forces from flowing water on a surface or structures. Field Survey: Killeen = 38% (67 out of 175 structures & channels) Population: Killeen = 87.9% (90,346 out of 102,827 residents in the watershed) If the grant were to be awarded, the contract would come back before Council for consideration. In-kind services may be substituted for any part of the local share, if such services are directly in support of the planning effort, are properly documented, and approved in advance be the TWDB. Therefore, City staff will also pursue the possibility of providing in-kind services to minimize the cost that is brought back before Council. The City’s funding could be derived from existing annual budgetary allocations within the drainage utility fund (professional services and Minor CIP funds).
Nolan Creek Flood Protection Plan Cost of Killeen’s Participation
