January 2007
transect points: My 2007 Field Season Begins
In the Yakima Valley, WA, with its 500,000 irrigated acres and its network of leaking canals, irrigation induced seasonal wetlands are common. In the floodplain, upwelling hyporheic / phreatic river water can be masked by irrigation induced hydrology, but only while the canals are full, or recently so. During this January visit, long after irrigation diversions have ceased, there was no mistaking the dominant river-induced groundwater hydrology at the site.
February 2006
transect points: Orange ooze gives clues for those in the know.
Orange ooze forms where anaerobic waters seep from the ground. This can be a good and natural thing, or it can be due to contamination.
Nyrim low ground pressure track pads (pdf)
track pads allow machines to travel on soft ground without sinking. they also reduce soil compaction and minimize ground damage. pads typically result in 2 psi. 1.5 psi achievable
1
(3 marks)