Frost and thaw depths (frozen soil profiles) from various locations around the state on Minnesota
Frost depth varies across the state in January 2018, but is generally deeper than it was last two years. The map on the right depicts the depth that the ground is frozen under sod across the state. The frost depth is measured by a simple instrument called a frost tube. The liquid freezes in the tube ...
Frost Depth Readings The SWROC has two frost tubes which will be read weekly (usually on Mondays) throughout the winter season. One tube is located under bare ground and the other is located under sod.
Graphs display frozen soil profiles based on sensor data from several locations in Minnesota.
Frost depth data shown in this map is queried from the North Central River Forecast Center (NCRFC) database late morning each day. Frost depth reports here are commonly from frost tube instruments, visual reports from construction or cemetery sites, or other types of electronic probes.
Measuring Frost Depth Papers, Reports, Articles. Transportation Research Board (2003) Presentation: Automated Soil Monitoring for Seasonal Load Limits (PDF 818 KB, 12 pp) Time Domain Reflectometry (TDR) Summary and Recommendations (PDF 204 KB, 3 pp) Frost Depth Monitoring Sites; Geotechnical News Magazine: (Volume 20 Number 1, March 2002)
1303.1600 FOOTING DEPTH FOR FROST PROTECTION. § Subpart 1. Minimum footing depth. In the absence of a determination by an engineer competent in soil mechanics, the minimum allowable footing depth in feet due to freezing is five feet in Zone I and 3-1/2 feet in Zone II. ... Minnesota Office of the Revisor of Statutes, 700 State Office Building ...
Soil temperature profiles provide an indication of frost depth during the winter which can have an impact on spring snowmelt runoff rates. This map displays soil temperature data from sensors at depths of 2, 4, 8, 20, and 40 inches. Data are queried from the NCRFC database late morning each day.
Back To Map Minnesota Extreme Frost Line Penetration (in inches) State Average Frost Depth: 80″ Source: Minnesota Department of Labor & Industry
Olmsted county frozen soil profile below the pavement surface 2018-2019