The Modified Philip Dunne (MPD) measures the hydraulic conductivity and suction head for infiltration practices. It requires less water and less energy than the traditional double ring infiltrometer. This video demonstrates the use of the MPD infiltrometer and a spreadsheet that translates the MPD data into a soil hydraulic conductivity and suction head. (6:00)
Winter maintenance for small sites
Small areas and entryways (including steps, ramps, and curb cuts) can be difficult to maintain in winter. Two short videos produced by the Minnesota Pollution Control Agency, in cooperation with the University of Minnesota, the Mississippi Watershed Management Organization, Digital Motion and Fortin Consulting, show the best ways to handle winter maintenance.
Part 1 (10:00)
Part 2 (9:30)
Pond sediment excavation best practices to protect water quality in stormwater ponds, as well as streams, lakes and rivers connected in the watershed. (44:29)