No . Page 



8 Chiwawa River — Water quality, physical characteristics, 



1955-1956 , . . 14 



9 Chiwawa River — Water quality, water temperature, 1956 . 17 



10 Chiwawa River — Water quality, chemical characteristics, 



1955-1956 17 



11 Lake Wenatchee — Water quality, physical charax:ter- 



istics, June-October 1955 18 



12 Lake Wenatchee — Water quality, chemical character- 



istics, June-October 1955 18 



13 Wenatchee River at Plain — Water quality, physical 



characteristics, 1955-1956 20 



14 Wenatchee River at Plain — Water qucility, water 



temperature, 1956 20 



15 Wenatchee River at Plain — Water quality, chemical 



characteristics, 1955-1956 20 



16 Wenatchee River at Turawater Canyon — Water quality, 



physical characteristics, 1955-1956 23 



17 Wenatchee River at Tumwat^r Canyon — Water quality, 



water temperature, 1956 23 



18 Wenatchee River at Tumwater Canyon — Water quality, 



chemical characteristics, 1955-1956 23 



19 Wenatchee River at Sleepy Hollow — Water quality, 



physical characteristics, 1954, 1955 and 1956 ... 26 



20 Wenatchee River at Sleepy Hollow — Water quality, 



water temperature, 1956 26 



21 Wenatchee River at Sleepy Hollow — Water quality, 



chemical characteristics, 1954, 1955 and 1956 ... 26 



22 Wenatchee River at Sleepy Hollow and Columbia River 



at Rock Island—Water quality, 1954-1955-1956 ... 30 



