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Canning altitude adjustments in Delaware
Delaware's featured towns sit about 20 to 70 ft — all inside the 0–1,000 ft band, so every tested recipe applies exactly as printed, in any kitchen in the table below.
The lay of the land
Delaware is famously low-lying — Wilmington reads about 70 ft, Dover about 20, and no corner of the state climbs anywhere near the 1,000-ft top of the first band. That makes it a rare thing: a state where the altitude answer is the same for every kitchen in it. Your water-bath times are the recipe's own, from the Brandywine to the beaches.
In canning terms it's simple ground: every featured town shares the 0–1,000 ft row — water-bath times as written, 10 lb on a weighted gauge, 11 lb on a dial. The table below is short on drama, which is exactly what a canner wants.
| Town | Elevation | Water bath | Dial gauge | Weighted gauge |
|---|---|---|---|---|
| Dover | about 20 ft | as written | 11 lb | 10 lb |
| Wilmington | about 70 ft | as written | 11 lb | 10 lb |
Town not in the table? The altitude lookup takes any Delaware ZIP or town and hands back the full card — elevation, minutes, and pressures in one look. Recipe already in hand? The processing time adjuster does the arithmetic on your minutes.
Frequently asked questions
Do I need to adjust canning recipes anywhere in Delaware?
Not in any of the towns featured here. Everything from Dover to Wilmington sits inside the 0–1,000 ft band — the elevation range tested recipes are written for — so water-bath times apply exactly as printed. If your own town sits above that band, it plays by different rules; the altitude lookup will say so.
What pressure does a canner run at in Delaware?
For every town in the table: 10 lb on a weighted gauge, 11 lb on a dial gauge — the tested base settings, with no correction applied and the recipe's minutes unchanged.
When would altitude ever matter in Delaware?
The moment a kitchen sits above the 0–1,000 ft band. None of the featured towns reach it, but a cabin, a move, or a friend's place in higher country will — check the spot rather than assume the state.