Drainage Plan

Drainage Project Updates

•  In March 2019, City Council approved the second phase of the CIP for drainage. Phase II - Drainage encapsulates all of the City of Castle Hill’s identified watersheds with an updated cost and prioritization schedule to address flooding in the community. The second phase for drainage identifies a need of $18 million within the five watersheds and outlines all projects, identifies needs, probable cost and provides a prioritization schedule over a five-year period. Five-Year Capital Improvements Plan (CIP)

• Master Drainage Plan – Phase 1 - Master Drainage Plan – Phase 1
  • The City of Castle Hills had a master drainage study completed in August 2015 (Phase I – Watersheds II and III) to identify a conclusion and recommendation to address drainage projects within the City of Castle Hills. The study indicated problem areas in watershed II and III. In watershed II, Dogwood Lane and the drainage ditch from North Manton/Lockhill Selma to West Avenue near Krameria Drive were identified. Specifically, the study provided a summary of improvements for Dogwood, East Castle, Wisteria, Mimosa, and Krameria. The study details significant improvements which are required in watershed II and III. In watershed II, it highlights the need to address the insufficient channel and culvert conveyance capacity through East Castle, Wisteria, Mimosa, and Krameria. The improvements call for an upgrade of the culvert for conveyance capacities and construction of a wider channel with concrete lining. Watershed II costs at the time of the report was estimated at $3.5 Million. In watershed III, the issue is insufficient drainage conveyance capacity along Carolwood through Banyan, the recommendation is to install an underground stormdrain system in order to convey the stormwater from Glentower to the existing outfall. In 2015, the report estimates a cost of $3.4 Million to address watershed III.
• Master Drainage Plan – Phase 2 - Master Drainage Plan –Phase 2
  • The City of Castle Hills had a second master drainage study which was completed in May 2016 (Phase II – Watersheds I, IV and V) to identify a conclusion and recommendation to address drainage projects within other watersheds in portions of Castle Hills. The purpose of this study was to determine the cause of flooding within primary waterways with watershed I, IV and V (Fox Hall, Lemonwood, Travertine and Atwater). Similar to the first master drainage plan, phase II outlines proposed improvements with a scope of work and probable cost. In Phase II, it indicates four projects with a cost of $9 Million.