- Debay’s Slough Wildlife Area Unit (wdfw.wa.gov)
The Johnson/DeBay’s Slough Unit is comprised of agricultural fields, riparian forest, and freshwater wetlands. The unit was purchased in the late 1990’s to provide an undisturbed Game Reserve for trumpeter swans as well as to provide limited waterfowl hunting area. Public access in the Game Reserve area is limited to the parking/viewing area at the end of DeBay Island Road and the mowed grass field to the east of the Game Reserve parking area. Waterfowl hunting is allowed in the portion of DeBay’s Slough to the north of DeBay Island Road and the adjacent field to the east of DeBay’s Slough.
- Touchet Formation (Wikipedia)
The Touchet Formation or Touchet beds consist of well-bedded, coarse to fine sand and silt which overlays local bedrock composed of Neogene basalt of the Columbia River Basalt Group in south-central Washington and north-central Oregon. The beds consist of more than 40 to 62 distinct rhythmites – horizontal layers of sediment, each clearly demarcated from the layer below. These Touchet beds are often covered by windblown loess which were deposited later; the number of layers varies with location. The beds vary in thickness from 330 ft (100 m) at lower elevations where a number of layers can be found to a few extremely thin layers at the maximum elevation where they are observed (1,150 ft (350 m)).