4.1 Otsego Creek Hydraulic Study
Request for
City Council Action
DEPARTMENT INFORMATION
ORIGINATING DEPARTMENT REQUESTOR: MEETING DATE:
Public Works City Engineer Wagner November 28, 2022
PRESENTER(s) REVIEWED BY: ITEM #:
City Engineer Wagner City Administrator/Finance Director Flaherty 4.1 – Otsego Creek
Hydraulic Study
STRATEGIC VISION
MEETS: THE CITY OF OTSEGO:
Is a strong organization that is committed to leading the community through innovative
communication.
X Has proactively expanded infrastructure to responsibly provide core services.
Is committed to delivery of quality emergency service responsive to community needs and
expectations in a cost-effective manner.
Is a social community with diverse housing, service options, and employment opportunities.
Is a distinctive, connected community known for its beauty and natural surroundings.
AGENDA ITEM DETAILS
RECOMMENDATION:
City staff recommends the City Council approve an amendment to a professional services agreement.
ARE YOU SEEKING APPROVAL OF A CONTRACT? IS A PUBLIC HEARING REQUIRED?
Yes No
BACKGROUND/JUSTIFICATION:
The City of Otsego needs to complete an Otsego Creek Rehabilitation Project in conjunction with the
Prairie Pointe Development. The DNR had some additional modeling requirements to obtain permits for
the rehab project.
Otsego Creek has a preliminary FEMA flood plain modeled over it. Previous FEMA flood maps did not
include Otsego Creek. Although the preliminary FEMA flood plain has yet to be officially adopted
(anticipated 2024), the DNR insisted the City of Otsego must prove zero stage increases on the 100-year
flood using HEC-RAS.
The City of Otsego’s previous contract with AE2S was for modeling using XPSWM which is very good at
modeling storm flows when passing through various storm pipe networks and storm ponds. HEC-RAS
specializes in creek and river flows. Preparing a second model over the same area essentially doubles the
scope of work necessary, thus the amendment for an additional $18,500.
SUPPORTING DOCUMENTS ATTACHED:
• Amendment to Professional Services Agreement
POSSIBLE MOTION
PLEASE WORD MOTION AS YOU WOULD LIKE IT TO APPEAR IN THE MINUTES:
Motion to approve Amendment No. 1 to the Professional Services Agreement for storm water hydraulic
modeling of Otsego Creek with Advanced Engineering and Environmental Studies, LLC (AE2S) in the amount
of $18,500.
BUDGET INFORMATION
FUNDING: BUDGETED:
Fund 408 – Otsego Creek Watershed
No; however, there is sufficient funding
accumulated from Stormwater Impact Charges
collected through developments to pay for the
study.