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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
$3.92M 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 FY24 and conclude in FY25. The excavation of the channel will occur in coordination with DOT's culvert replacement in FY23 and FY24.
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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

In FY25, $989,000 in Current Revenue: Water Quality Protection replaces that amount of Water Quality Bonds. In FY24, State Aid increased $96,000 to reflect a State grant for tree planting, with an offsetting reduction in Water Quality Protection bonds. 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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Disclosures

The County Executive asserts that this project conforms to the requirement of relevant local plans, as required by the Maryland Economic Growth, Resource Protection and Planning Act.
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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
$3.92M 6 Year Total
Expenditures/Funding
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Project Details
Project NumberP801710
Date Last Modified01/07/24
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 FY23Est FY24Total 6 YearsFY 25FY 26FY 27FY 28FY 29FY 30Beyond 6 Years
Planning, Design and Supervision1509762896586144400000
Land00000000000
Site Improvements and Utilities00000000000
Construction3267003267875239200000
Other00000000000
Total Expenditures47767628939251489243600000
FUNDING (000s)
Funding SourceTotalThru FY23Est FY24Total 6 YearsFY 25FY 26FY 27FY 28FY 29FY 30Beyond 6 Years
Current Revenue: Water Quality Protection16176280989989000000
Federal Aid00000000000
Long-Term Financing00000000000
State Aid96009609600000
Water Quality Protection Bonds3063134892840500234000000
Total Funding Sources47767628939251489243600000
APPROPRIATION AND EXPENDITURE DATA ($000s)
Appropriation FY 25 Request0
Year First AppropriationFY16
Appropriation FY 26 Request0
Last FY's Cost Estimate4776
Cumulative Appropriation4776
Expenditure / Encumbrances922
Unencumbered Balance3854