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HomeMy WebLinkAboutFlood Report 11-10STAFF REPORT DATE: November 10, 2020 DISCUSSION AGENDA ITEM: Flooding Discussion SUBMITTED BY: Kristina Handt, City Administrator BACKGROUND: A number of properties experienced flooding issues this spring/summer due to the high ground water levels. The city council last discussed flooding issues at their February work session. Since that time the city has provided sand and bags to Lake Elmo property owners, assisted Valley Branch Watershed District (VBWD) in the pumping of two ponds-Legion Ave and Reid Park, provided information to Cimarron management about flooding, and attended a tour hosted by the county in July of flooded areas in Lake Elmo. At the tour it was mentioned the county and watershed district would be having a work session to discuss next steps. We have invited the county and watershed to this work session to provide an update to the council. ISSUE BEFORE COUNCIL: Receive update from Washington County and Valley Branch Watershed District and provide feedback as appropriate. PROPOSAL DETAILS/ANALYSIS: Per the watershed district, the typical flood management options are usually grouped into 1) reduce the runoff coming into the basin (e.g., divert, hold back, etc.) to lower the flood level, 2) create an outlet to lower the flood level, and/or 3) remove or structurally protect the problem structures from the floodplain (e.g., raise, fill basements, berm, remove, etc.). The VBWD began the process to amend their plan in September to allow for the purchase of flooded property on Klawitter Pond and Freidrich’s Pond in Lake Elmo. These were both visited during the tour in July. The VBWD is also preparing a work plan to submit with an application to the U.S. Army Corps of Engineers to study the feasibility of creating permanent outlets from several landlocked basins, most within the City of Lake Elmo. The work plan is not expected to be completed until the end of this year. The study will involve stakeholders, including the city of Lake Elmo and Washington County, and will likely take at least a year to complete. If VBWD orders a construction project, another Plan amendment would be needed. Funding for the study and pumping of areas in Lake Elmo is included in the draft 2021 VBWD budget. FISCAL IMPACT: NA ATTACHMENT:  2021 VBWD Budget Valley Branch Watershed District 2021 Levy and Budget Overview October 2020 John Hamerly—Lake Elmo Ed Marchan, Treasurer—West Lakeland Dave Sewell, Vice President—Lake Elmo Jill Lucas, President—Afton Rick Gelbmann, Secretary—North St. Paul Water Quantity Projects, 63%Water Quality Projects, 9% Inspection and Maintenance, 9% General/Fixed Overhead, 6% Permitting, 5% Public Education, 4% Monitoring, 3%Planning, 1% Valley Branch Watershed District 2021 Budget 2020 2021 Water Quantity Projects $1,350,972 $2,508,400 Water Quality Projects 552,000 368,000 Basin, Stream, and Groundwater Monitoring 111,000 103,000 Inspection and Maintenance 415,000 350,000 Public Education 120,000 168,000 Permitting 170,000 190,000 Planning 10,000 25,000 General/Fixed Overhead 250,000 250,000 Grand Total $2,978,972 $3,962,400 Estimated Carryover $711,401 $1,343,100 Estimated Revenue from Grants 293,504 243,000 Levy 1,974,067 2,376,300 Total Revenue $2,978,972 $3,962,400 Potential Bond (If bond obtained, 2020 expenses would increase. Carryover expected to higher.) $5,115,000 Total Revenue with Bond $8,093,972 2021 Water Quantity Projects $2,508,400 Emergency Fund $50,000 Home Buyouts/Floodproofing $202,600 Carryover from Bond for Future Projects $374,800 Payment on 2019 Bond $226,000 Payment on 2020 Bond $315,000 Watershed Modeling $100,000 Feasibility Study for Permanent Outlets at Landlocked Basins (Manning Avenue corridor basins ($390,000), Goose Lake ($29,000), four other basins at $130,000/basin) $940,000 Pumping at Legion Pond, Reid Park Ponds, Friedrich's Pond, Downs Lake/Eden Park Pond $300,000 Watershed District 2020 Estimated Tax Paid to Watershed District $250,000 Property $400,000 Property Comfort Lake-Forest Lake $126 $214 Brown's Creek $114 $193 Valley Branch $81 $137 Ramsey-Washington Metro $78 $132 Carnelian Marine St. Croix $72 $122 South Washington $17 (plus fee of $41, $47, $49, or $62 $29 (plus fee of $41, $47, $49, or $62) Rice Creek $41 $70 Average (assuming SWWD total is $58 for $250K and $91 for $400K)$81 $137 *Based on Washington County's tax impact worksheet calculator **The South Washington Watershed District fees might be different than listed ***The estimated tax impact of the 2021 VBWD levy would be $95 on a $250k property and $161 on $400K property Tax Impact of Watershed Districts covering Washington County