08-25-25 - City Council Agenda - Laserfiche WebLink

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CONSERVATION DESIGN FRAMEWORK The city of Lino Lakes expects the current Anoka County Ditch system through the area to remain in place in terms of function but not in terms of location or overall quality. The ditch system can be relocated within a proposed development to facilitate drainage of stormwater runoff, aesthetics, passive recreational facilities, and habitat creation. The realigned ditch system should incorporate the following design guidelines: 1) Easements a. RCWD requires a 20-foot easement on either side of the county ditch system, measured from the top of bank, to provide access for maintenance. b. In addition to maintenance easements required by RCWD, the City proposes native buffers averaging 50’ in width with a minimum width of 25’, measured from the top of bank, to provide space for the greenway corridor creation. 2) Lake/Pond Construction in-line with Ditch a. Ditches can be routed through lakes/ponds subject to RCWD design requirements. The City supports this method of realignment. b. In the event that a proposed development will create an in-line lake or pond area in relation to the ditch system, the proposed development is required to provide: i. RCWD with a 20-foot easement from top of bank along the alignment of the ditch and extend into the pond based on the average width of easement at the entrance and exit location of the ditch into the lake/pond. ii. The RCWD easement shall be along a bank of the lake/pond, and not through the center of the pond to limit maintenance responsibility on the District. iii. Water Quality Basins shall be provided prior to discharge of stormwater runoff into the lake/pond. iv. City requires establishment of a buffer around a constructed lake/pond with minimum buffer based on function of the BMP. Buffers may vary around the perimeter of the constructed lake/pond but must meet the minimum and average distances along their edges. 3) Realignment a. The city of Lino Lakes is in support of realignment of the county ditch system when proposed to be consistent with the goals of the master plan. i. Realignment must be approved by RCWD through Rule I. ii. Additional buffer widths may be required through land use and zoning requirements. See figure below for a cross section view of the easement and buffer requirements. Cross Section View of Drainage and Conservation Framework SCENARIO 2 - CONSERVATION FRAMEWORK MAPPING NORTHWEST MAIN - MAIN STREET MASTER PLAN AUGUST 25, 2025 PREFERRED DEVELOPMENT SCENARIO | 29Page 83 of 171