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Warren County, Tennessee

A shallow water table limits basements on 26% of Warren County's mapped land. Shrink-swell clay limits houses without basements on under 1%.

100% of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 5 flood losses here since 2016. 52% of homes were built before 1980, against 50% nationally; the median home dates from 1979.

Data as of October 13, 2026 · sources

<1%

expansive clay: shrink-swell limits slab homes

26%

high water table: limits basements

100%

in drought, October 13, 2026

52%

of homes built before 1980

Soil under Warren County

Expansive clay (limits slab homes)0.2%
High water table (limits basements)25.7%
Septic fields very limited65.0%
Clay swell (LEP, by area)2.3%
High-swell land (LEP 6%+)0.2%
Mapped soil278,200 acres
Soil seriesShare hereSeries nationally: high water table
Waynesboro22%n/a
Mountview9%n/a
Dickson7%n/a
Bouldin6%n/a
Christian6%n/a
Huntington5%n/a
Van Buren County: 2%Cannon County: 28%Grundy County: 5%DeKalb County: 19%Coffee County: 45%White County: 8%Sequatchie County: 3%Bledsoe County: 4%Warren County Van BurenCannonGrundyDeKalbCoffeeWhiteSequatchieBledsoeWarren
Warren County (heavy outline) and nearby counties, shaded by high water table share.under 10%10-25%25-40%40-60%60%+

How we count · survey areas TN177 (2025-08-29)

What the numbers mean here

On 26% of Warren County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.

Rain over the 12 months to August 2026: 46.32 in, 10.76 in below the 1991-2020 average year of 57.08 in.

USDA rates 65% of the land very limited for septic absorption fields.

Drought

100% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 29 of the last 52 weeks; the most was 100% of its area, in 12 weeks, most recently on the October 13, 2026 map.

October 21, 2025Share of area in drought, weeklyOctober 13, 2026
Category, October 13, 2026Share of county
D0 abnormally dry or worse100%
D1 moderate drought or worse100%
D2 severe or worse95%
D3 extreme or worse0%
D4 exceptional0%

Flood losses since 2016

5 flood losses since 2016, $63,642 paid. The worst year was 2024, with 2.

YearFlood losses
20160
20170
20180
20192
20201
20210
20220
20230
20242
20250
2026 to date0

Rain

Average year, 1991-202057.08 in
12 months to August 202646.32 in (-10.76)
202558.98 in (+1.90)
Wettest year since 18951973: 73.01 in
Driest year since 18952007: 33.71 in
Days with 1 inch or more, normal at MC MINNVILLE (0 mi away)15.7

Homes

Housing units18,537
Median year built1979
Built before 198052%
Built 2000 or later20%
Owner-occupied72%
Median value, owner-occupied$192,900
Single-family detached72%

What repairs cost

Published ranges from cost guides, not quotes. More sources, and where they disagree.

WorkRangeSource
Basement waterproofing, US $3,000 to $10,000 Fixr, February 6, 2026
Sump pump installation, US $800 to $2,000 Fixr, January 31, 2025
Crawl space encapsulation, US $2,000 to $8,000 Fixr, August 29, 2025

Nearby counties

PlaceDistanceExpansive clayHigh water table
Van Buren County, TN 18 mi 1% 2%
Cannon County, TN 18 mi 17% 28%
Grundy County, TN 20 mi 2% 5%
DeKalb County, TN 21 mi 13% 19%
Coffee County, TN 21 mi 2% 45%
White County, TN 25 mi 2% 8%
Sequatchie County, TN 30 mi 1% 3%
Bledsoe County, TN 33 mi 2% 4%

Sources: USDA SSURGO (August 29, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status