TO: Mayor and Members of City Council
THRU: Adam Lindsay, Assistant City Manager
FROM: Sheila Thomas-Ambat, PE, Public Services Director
DATE: May 6, 2024
RE:
Title
Watershed Master Plan Solutions for Cross Creek
end
COUNCIL DISTRICT(S):
Council District(s)
1,2,3, and 4
b
Relationship To Strategic Plan:
Supports Goal 3. City Investment in Today and Tomorrow, through the Strategic Objective 3.1 Enhance City street connectivity, traffic flow, and stormwater systems
Executive Summary:
Staff seeks concurrence from City Council to approve staff to program the proposed solutions from the Cross Creek Watershed Study into the annual CIP prioritization process and pursue grants as applicable.
Background:
The Cross Creek Watershed Study has identified 83 proposed solutions at a total estimated planning level cost of $380M. This cost includes the Rose (Roses) Lake proposed solution, for which Council provided consensus on September 5, 2023 to pursue funding sources to continue to evaluate Roses Lake as a dry detention option for flooding mitigation. The top 11 proposed secondary system solutions range in severity score from 63 to 16 and in estimated costs from $23.6 to $0.5M. The majority of these solutions include pipe upsizing.
Council provided consensus to pursue funding sources to further develop advanced conceptual design for the Channel Improvement Option on September 5, 2023. Because funding has not yet been identified, while this option is discussed, the cost does not include the Channel Improvement Option.
Issues/Analysis:
The top proposed solutions are represented as examples of the 83 proposed solutions. While these are the top proposed solutions for the Cross Creek Watershed, all the proposed solutions from Cross Creek Watershed will be programmed into the CIP along with proposed solutions from other completed watersheds.
Proposed solutions presented herein are not moving forward to project development at this time. However, approval enables staff to program them into the Stormwater CIP prioritization process.
The prioritization of proposed solutions takes into consideration a number of factors before recommending them to Council for project development. Solutions are sorted based off of Concern Area Score (“Worst First”) and efficacy. Staff has then targeted an equitable distribution between watersheds as well as strategic selections, such as a project’s ability to be considered for grant funding or a project’s proximity to other construction related activities (i.e. NCDOT improvements or Resurfacing).
The prioritization of proposed solutions should not be viewed as a static list to be done in sequential order. As study areas are completed, new proposed solutions are developed that adjust priority ranking and flexibility exists in those proposed solutions ranking the highest.
All proposed solutions recommended to move forward to project development thus far have been brought before Council for approval. These 12 proposed solutions make up 10 projects that are currently under design or about to begin construction.
Budget Impact:
There is no impact to the General Fund.
Options:
1. Council provides consensus to approve the 83 proposed solutions to enable staff to program them into the annual CIP prioritization process and pursue grants as applicable.
2. Council does not provide consensus to approve the 83 proposed solutions and remands back to staff with additional guidance.
Recommended Action:
Council provides consensus to approve the 83 proposed solutions to enable staff to program them into the annual CIP prioritization process and pursue grants as applicable.
Attachments:
CRO May 2024 Council Meeting_2024.04.29.pdf