Background/Discussion
The Eastern Hills Drive Segment D project and the Steven Road East project require the construction of four large box culverts in the existing channel of Little Pony Creek and in one tributary of Little Pony Creek.
The construction of the box culverts creates stream impacts that are required to be mitigated per the USACE 404 Permit.
On-site mitigation opportunities for both projects were very limited due to the amount of right-of-way available for stream mitigation. On-site mitigation would not satisfy the mitigation needs for the projects and would provide little overall benefit to the watershed.
Off-site mitigation alternatives were reviewed and the selected alternative is restoration and enhancement in the channel of Mosquito Creek adjacent to, and north and south of Valley View Park. The mitigation would provide additional flood storage, and both nutrient and sediment retention capacity.
The letter agreement with the USACE is the City’s commitment to construct and maintain the mitigation along Mosquito Creek.
The mitigation project is expected to be constructed in the fall of 2018.