Watershed at a Glance. The Cannon River watershed is located south of the Twin Cities and encompasses areas of Dakota, Goodhue, Le Sueur, Steele, Rice and Waseca counties. The watershed drains approximately 1,460 square miles through two main channels, the Cannon and Straight Rivers, to the Mississippi at Red Wing.
While some large industrial, commercial, and electric generation customers receive natural gas directly from high capacity interstate and intrastate pipelines (usually contracted through natural gas marketing companies), most other users receive natural gas from their local gas utility, also called a local distribution company (LDC).
Natural Gas Measurement. Natural gas is typically measured in terms of its volume at surface conditions and in thermal energy units. It is measured by weight only when it is in the liquid state (LNG). Because gas is compressible, its volume varies significantly with changes in temperature and pressure.