Warren County, Virginia
USDA's soil survey flags shrink-swell clay on 2% of Warren County's mapped land and a shallow water table under basements on 7%, both below the national shares of 15% and 29%. None of the county is in drought on the October 13, 2026 Drought Monitor map.
FEMA's flood data list 17 flood losses here since 2016. 42% of homes were built before 1980, against 50% nationally; the median home dates from 1986.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under Warren County
| Expansive clay (limits slab homes) | 1.8% |
| High water table (limits basements) | 7.0% |
| Septic fields very limited | 86.3% |
| Clay swell (LEP, by area) | 2.6% |
| High-swell land (LEP 6%+) | 9.6% |
| Mapped soil | 140,100 acres |
How we count · survey areas VA187 (2025-09-05)
What the numbers mean here
Rain over the 12 months to August 2026: 33.02 in, 9.13 in below the 1991-2020 average year of 42.15 in.
USDA rates 86% of the land very limited for septic absorption fields.
With shrink-swell clay on 2% and a shallow water table on 7% of the land, the soil survey points to neither problem across most of Warren County; conditions still vary lot by lot.
Drought
0% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 49 of the last 52 weeks; the most was 100% of its area, in 42 weeks, most recently on the August 4, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 98.9% |
| D1 moderate drought or worse | 0% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
17 flood losses since 2016, $279,912 paid. The worst year was 2018, with 10.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 2 |
| 2018 | 10 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 42.15 in |
| 12 months to August 2026 | 33.02 in (-9.13) |
| 2025 | 40.22 in (-1.93) |
| Wettest year since 1895 | 2018: 67.90 in |
| Driest year since 1895 | 1930: 16.63 in |
| Days with 1 inch or more, normal at FRONT ROYAL (1 mi away) | 11.2 |
Homes
| Housing units | 17,064 |
| Median year built | 1986 |
| Built before 1980 | 42% |
| Built 2000 or later | 26% |
| Owner-occupied | 76% |
| Median value, owner-occupied | $348,400 |
| Single-family detached | 82% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Rappahannock County, VA | 16 mi | 0% | 10% |
| Winchester city, VA | 18 mi | 22% | 5% |
| Clarke County, VA | 18 mi | 31% | 15% |
| Shenandoah County, VA | 20 mi | 37% | 14% |
| Frederick County, VA | 20 mi | 16% | 15% |
| Fauquier County, VA | 24 mi | 6% | 28% |
| Page County, VA | 25 mi | 3% | 16% |
| Culpeper County, VA | 32 mi | 24% | 27% |
Sources: USDA SSURGO (September 5, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status