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Basement Risk Index™ · Community Report

Basement Flood Risk in Orion Township, Michigan

20BRI / 100
MODERATE RISK
Ranked #80 of 117 metro Detroit communities

Orion Township, Michigan carries a Basement Risk Index of 20 out of 100, ranking #80 of 117 communities across metro Detroit, which is below the metro Detroit average. The score is driven by housing age and soil: 20% of Orion Township homes were built before 1960, the era before sump pumps, exterior weeping tile, and backwater valves were standard, and the region's heavy clay soil holds water against those older foundations.

Orion Township basement risk at a glance

Basement Risk Index20 / 100 (MODERATE)
Metro rank#80 of 117
Homes built before 196020%
Peak building era1990s (26% of homes)
Median year built1988
Median home value$322,600
Median household income$108,042
Owner-occupied81%
Neighborhoods analyzed11

Source: Basement Risk Index, derived from U.S. Census Bureau ACS housing data and municipal flood records. Index weightings are proprietary.

When Orion Township was built

The housing stock in Orion Township peaked in the 1990s, when about 26% of today's homes were built. In total, 20% of Orion Township homes predate 1960. That matters because basements built before the 1960s typically lack the sump pumps, perimeter drain tile, and backwater valves that became standard later, leaving many on their original, aging clay drain tiles.

2020 or later
0%
2010s
11%
2000s
10%
1990s
26%
1980s
9%
1970s
16%
1960s
7%
1950s
9%
1940s
5%
Before 1940
6%

How basement risk varies inside Orion Township

We score 11 individual neighborhoods inside Orion Township. Of those, 0 fall in the high or severe band, 1 are elevated, and 10 are moderate or lower. Risk is rarely uniform across a city, so the most useful number is the one for your own block, which a free assessment pins down.

0Severe
0High
1Elevated
5Moderate
5Lower

What this means for Orion Township homeowners

Orion Township scores in the moderate band, but moderate is not zero on clay soil. Prevention is cheap relative to a flooded basement, and a free check tells you what you are working with.

Why Orion Township homes face basement risk

Basement flooding in Orion Township is mostly a function of housing age and soil. Older homes were built with clay drain tiles that crack and clog over decades, and the dense clay across southeast Michigan holds water against foundations rather than letting it drain.

How Orion Township compares

Orion Township's Index of 20 is below the metro Detroit median of 32. It ranks #80 of 117 communities region-wide.

Does insurance cover it?

Often not. Standard Michigan homeowners policies commonly exclude sewer backup and groundwater unless you carry a specific endorsement. Before the next storm, it is worth reading our guide on whether insurance covers basement flooding in Michigan and checking your declarations page.

What to do about it

  1. Lower risk is not zero risk on the region's clay soil, a free prevention check takes about 30 minutes.
  2. Watch for symptoms after storms; what you see at your own home matters more than any average.
  3. Maintain gutters and grading, the two cheapest protections any Michigan home has.
See Orion Township on the full metro Detroit Basement Risk Index map →

Get your free Orion Township basement assessment

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Nearby communities

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Homeowner guides

Does insurance cover basement flooding?What to do when your basement floodsThe 2021 metro Detroit floodsWhat keeps a Michigan basement dry

Frequently asked questions

Is Orion Township at high risk for basement flooding?

Orion Township scores 20 out of 100 on the Basement Risk Index, ranking #80 of 117 metro Detroit communities (MODERATE risk). The score reflects how much of the local housing stock predates modern basement drainage, on the region's clay soil.

Why does housing age matter so much in Orion Township?

Sump pumps, exterior weeping tile, and backwater valves only became standard in the 1960s and 70s. 20% of Orion Township homes were built before 1960, with the largest share built in the 1990s. Many still rely on original clay drain tiles that fail over time.

Does homeowners insurance cover basement flooding?

Often not. Standard policies commonly exclude groundwater and sewer backup unless you carry a specific rider. See our Michigan insurance guide.

Is the assessment really free?

Yes. A licensed local contractor inspects your basement and foundation at no cost and no obligation. If repairs are recommended, you decide whether to proceed.