CanningDates › Altitude › Virginia › Blacksburg
Canning at about 2,090 ft in Blacksburg
Blacksburg sits at about 2,090 ft, where water boils a little cooler than the recipes assume. Add 5 minutes to any water-bath time, set a dial gauge to 12 lb, and a weighted gauge to 15 lb — the label below is the whole answer.
BLACKSBURG, VIRGINIA
- ELEVATION
- ≈2,090 FT
- WATER BATH
- +5 MIN
- DIAL GAUGE
- 12 LB
- WEIGHTED
- 15 LB
Adjustments use the 1,001–3,000 ft band, so small elevation differences nearby rarely change your numbers.
canningdates.com
canningdates.com — Blacksburg, VA at about 2,090 ft, from the published USDA adjustment bands. Low-acid foods must be pressure canned.
Blacksburg at about 2,090 ft
Up on its plateau above the New River, Blacksburg reaches about 2,090 ft — five added water-bath minutes, and not even a hundred feet past the dial-gauge table's 2,000-ft step, where the reading becomes 12 lb. Homes downhill toward the river can sit on the 11-lb side of that step.
Adjustments come in bands, not curves. The whole 1,001–3,000 ft band gets the same 5 added minutes and the same 12 lb dial setting, so the difference between your kitchen and about 2,090 ft almost never matters. Live near the top of the band and unsure which side you're on? Use the higher band — a little extra processing costs texture; too little costs safety.
As for the number itself: Blacksburg's elevation was checked against the USGS elevation service, starting from the NOAA weather-station inventory (BLACKSBURG NWSO). Elevation shifts block to block in any town, but the bands are wide on purpose — a station a few miles out almost never changes the row.
Not your kitchen? The altitude lookup turns any ZIP or town into a card like this one. Recipe already in hand? The processing time adjuster takes your recipe's minutes and applies Blacksburg's band for you.
Frequently asked questions
How many minutes do I add to a water-bath recipe in Blacksburg?
Add 5. Blacksburg sits at about 2,090 ft, in the 1,001–3,000 ft band, so whatever process time your tested recipe gives for the lowest band, add 5 minutes to it and hold a full boil for the whole time.
What pressure do I set in Blacksburg?
12 lb on a dial gauge, 15 lb on a weighted gauge. Weighted gauges come in fixed steps, which is why the weighted number sits higher than the dial's — both reach the tested temperature inside the canner at Blacksburg's elevation.
My kitchen isn't at exactly about 2,090 ft — do my numbers change?
Almost certainly not. The whole 1,001–3,000 ft band shares one answer, so block-to-block differences around Blacksburg are already priced in. The only case worth a thought is a home near the band's edge — then use the higher band's numbers, which err on the safe side.
Do pressure-canning times change with altitude too?
No — this is the part canners like. A pressure canner restores the tested temperature by raising pressure, so the minutes stay exactly as the recipe states them. In Blacksburg that means the right pounds — 12 on the dial, 15 weighted — and the printed time, unchanged.