At sea level, water boils at 212 °F. As the elevation increases, water will boil at a lower temperature. For elevations above sea level, it is necessary to add additional time or pressure when processing food to obtain a safe product. Canning directions for each food will give proper processing times and pressures for elevation adjustments. The map indicates the elevations for Nebraska (Figure 1).
Figure 1. Elevation ranges in Nebraska. Map was prepared by Les Howard, cartographer, UNL School of Natural Resources
Article originally written by Julie Albrecht. Updated and reviewed by Carol Larvick in 2021.