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<br /> <br /> <br />Tab1.e 4.-Water ~a'tare, depth or ns1~ty, pH, d:1sso1ved oxygen, and a.1lno11n1ty. <br />JUly 2 through September 30, J.962- <br /> Green R1 'Y81" Green River Yampa River Green River <br /> Gates of Lodore Kcbo Park Echo Park Is:Land Park <br /> July 2-25 July 29-A.\wlst 25 July 29-A~st 20 Sept. 23-:30 <br />l-lea.screment ~ Avera.rr.e ~e Aver~ Ran$te Aver~ RaMe Average <br />Temperature (OF) 66-12 68 66-12 (J:; 67-74 11 Sl-f:A. 60 <br />Depth of <br />visibility (in)1f: .25-9.25 .5-25 <br />pH 1.4-7.6 7.5 7.5-7.5 7.5 7.5-7.5 7.5 7.5-7.5 7.5 <br />Dissolved <br />oxygen (ppm) 6.6-7.3 7.0 6.8-8.0 7.6 6.0-8.1 7.7 8.1-8.6 8.4 <br />Phenolphthalein <br />a.1kalini ty (ppm) 0-9 5 0-10 7 0-10 7 0-3 1 ~ <br />Nethy1 orange <br />a1kalin1 ty (ppm) 157-165 161 121-158 139 123-146 131 128-1)8 133 <br />· Secchi disc depth <br /> <br /> <br />