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Budget Year / Version:  
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Description

This flood mitigation project, located along Glenhaven Drive and Dennis Avenue in Wheaton, will excavate and expand the stream channel upstream of the Wheaton Regional Pond and modify the pond's riser structure. This project will be constructed in parallel with the Department of Transportation's (DOT) Dennis Avenue bridge replacement. The two projects will modify the current 100-year floodplain boundary just upstream of the pond. The post-project 100-year floodplain will not include the residential properties located in the current 100-year floodplain.
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Phase

Planning Stage

Status

Active
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Budget Snapshot
$4.78M Total
Expenditures/Funding
$3.78M 6 Year Total
Expenditures/Funding
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Location

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Estimated Schedule

The riser modification and channel design began in FY18 with the riser repair construction expected to start in FY23. The excavation of the channel will occur in coordination with DOT's culvert replacement in FY23 and FY24.
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Cost Change

Project cost adjusted as scope is further refined.
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Justification

An engineering analysis by the Department of Environmental Protection indicates that the effect of the riser structure associated with the Wheaton Regional Pond, the Dennis Avenue Culvert, and an undersized stream channel along Glenhaven Drive, cumulatively, will cause flooding of roads and private property upstream of the pond during a 100-year storm event. Flooding of adjacent roads and private property has already occurred in 2006 and 2010.
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Fiscal Note

Funding sources updated in FY23 to include Water Quality Protection Fund bonds in FY23-FY28. The County intends for a portion of Long Term Financing in FY22 to also be paid for with Water Quality Protection Fund bonds. This project will be done in conjunction with the DOT Dennis Avenue bridge replacement project (P501701).
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Coordination

Department of Transportation, Federal Emergency Management Agency, Maryland Emergency Management Agency, and Dennis Ave Bridge M-0194 Replacement (No. 501701).
Budget Snapshot
$4.78M Total
Expenditures/Funding
$3.78M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP801710
Date Last Modified12/29/21
Administering AgencyEnvironmental Protection
CategoryConservation of Natural Resources
SubCategoryStormwater Management
Planning AreaKensington-Wheaton
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Total Expenditures by Cost Element (000s)
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Total Funding by Source (000s)
EXPENDITURES (000s)
Cost ElementsTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
Planning, Design and Supervision127662836927915912000000
Land00000000000
Site Improvements and Utilities00000000000
Construction35000035001750175000000
Other00000000000
Total Expenditures477662836937791909187000000
FUNDING (000s)
Funding SourceTotalThru FY21Est FY22Total 6 YearsFY 23FY 24FY 25FY 26FY 27FY 28Beyond 6 Years
Current Revenue: Water Quality Protection628628000000000
Federal Aid00000000000
Long-Term Financing369036900000000
Water Quality Protection Bonds37790037791909187000000
Total Funding Sources477662836937791909187000000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 23 Request-754
Year First AppropriationFY16
Appropriation FY 24 Request0
Last FY's Cost Estimate5530
Cumulative Appropriation5530
Expenditure / Encumbrances891
Unencumbered Balance4639