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Basement Risk Index™ · Community Report

Basement Flood Risk in Washington Township, Michigan

Washington Township’s Basement Risk Index is 7/100 (LOWER). 10% of homes here were built before 1960 (U.S. Census ACS 2020-2024, updated Jul 2026), the biggest driver of basement-flooding risk in this region.

7BRI / 100
LOWER RISK
Ranked #109 of 116 metro Detroit communities

Data confidence: C, modeled from housing-age measures; no local flood records integrated yet. How the score is built →

Washington Township, Michigan carries a Basement Risk Index of 7 out of 100, ranking #109 of 116 metro Detroit communities, far below the metro median of 37. Washington Township is one of the metro's newer communities, its housing peaking in the two-thousands, well into the era of modern basement waterproofing, the main reason its Index sits toward the lower end of the range. Among Washington Township and its five nearest neighbors it carries the lowest modeled risk; its housing is mostly owner-occupied and middle-income for the region.

Water in your basement in Washington Township right now?

  1. Don’t enter standing water if the power is on. Cut it at the breaker only from a dry spot, or call an electrician.
  2. Photograph and video everything before you move or clean up anything, insurance and city claims both turn on this.
  3. Michigan law gives you about 45 days from discovery to file a written damage claim with your sewer authority. Start today.
  4. Once it is safe, call a licensed waterproofing contractor. Do not wait for it to dry on its own.

Washington Township basement risk at a glance

Basement Risk Index7 / 100 (LOWER)
Metro rank#109 of 116
Homes built before 196010%
Peak building era2000s (23% of homes)
Median year built1995
Median home value$408,400
Median household income$97,723
Owner-occupied81%
Neighborhoods analyzed5

Washington Township's score is modeled from U.S. Census housing data; no municipal flood records are integrated yet. The Basement Risk Index is built from U.S. Census housing data and documented flood records. See our full methodology.

When Washington Township was built

Washington Township's housing is spread across several decades, peaking in the two-thousands at about 23% of today's homes; relatively few of the stock, 10%, predates 1960. These are higher-value homes for the metro, and 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 clay drain tiles.

2020 or later
2%
2010s
14%
2000s
23%
1990s
21%
1980s
8%
1970s
15%
1960s
7%
1950s
2%
1940s
2%
Before 1940
6%

How basement risk varies inside Washington Township

We score 5 individual neighborhoods inside Washington Township, and the pattern is skewed to the lower bands: 0 fall in the high or very high band, 0 are elevated, and 5 are moderate or lower. The number that matters is the one for your own block, not the city average.

0Very High
0High
0Elevated
0Moderate
5Lower

What this means for Washington Township homeowners

Washington Township scores toward the lower end of the metro range, largely because of its newer housing. Risk is still real on clay soil, so watch for symptoms after heavy rain. Among its immediate neighbors, Washington Township scores lower than Ray Township, so the block next door is a better guide than any metro-wide average.

Why Washington Township homes face basement risk

Basement risk in Washington Township comes down to two things: how old its houses are and the clay beneath them. With relatively few of its homes, 10%, built before 1960 and the biggest share going up in the two-thousands, many sit on original clay drain tile, and southeast Michigan's dense clay holds water against those foundations rather than letting it drain.

How Washington Township compares

Washington Township's Index of 7 ranks #109 of 116 communities region-wide and sits below the metro Detroit median of 37. It runs level with its nearby neighbor Oakland Township.

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 sewer backup 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.

Hiring in Washington Township?

We keep public-record profiles of metro Detroit basement waterproofing contractors, drawn from their own listings and Michigan licensing records. No ratings and no pay-to-play, just the record. Browse the contractor records →

See Washington Township on the full metro Detroit Basement Risk Index map →

Concerned about this score?

We connect Washington Township homeowners with one licensed, insured basement waterproofing contractor for a free, no-obligation assessment. Your information goes to one local pro, never to lead lists.

Request your free assessment →

See Washington Township on the interactive metro map →
Read the published methodology →
Browse all 116 communities ranked →

Nearby communities

Ray Township · 42Oakland Township · 7Rochester · 22Bruce Township · 23Rochester Hills · 15

Homeowner guides

Does insurance cover sewer backup?What to do when your basement floodsWhat waterproofing costs in metro DetroitHow to choose a waterproofing contractorSump pump costs in MichiganBackwater valves: cost and who needs oneThe 2021 metro Detroit floodsWhat keeps a Michigan basement dry

Frequently asked questions

Where does Washington Township rank for basement-flood risk among nearby communities like Ray Township and Oakland Township?

Washington Township scores 7 out of 100, ranking #109 of 116 metro Detroit communities (LOWER risk). Among its five nearest neighbors it carries the lowest risk: Ray Township scores 42 and Oakland Township scores 7.

Are Washington Township's homes older than those in nearby Ray Township and Oakland Township?

10% of Washington Township homes were built before 1960 (median year built 1995, with the largest share in the two-thousands). In Ray Township, 39% predate 1960 (median year built 1972). Older housing means more basements plumbed before sump pumps, weeping tile, and backwater valves were standard.

What is the biggest basement-flood driver in Washington Township versus Oakland Township?

Housing age and clay soil. 10% of Washington Township homes predate 1960, and southeast Michigan's dense clay holds water against older foundations rather than draining it. Washington Township scores 7 and Oakland Township 7, so the same prevention steps apply, sized to each home.