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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />temperatures in the Little Snake River declined and were cooler than minimum <br />temperatures in the Yampa River, while maximum daily temperatures remained <br />higher in the Little Snake River. This pattern of Little Snake River temperatures <br />fluctuating higher and lower than Yampa River temperatures continued until mid- <br />August when maximum daily temperatures in the Little Snake River dropped to <br />levels cooler than maximum temperatures in the Yampa River. By mid-August, <br />Little Snake River maximum daily temperatures also dropped below maximums in <br />the Yampa River. <br /> <br />Water quality parameters were relatively constant on three sampling <br />occasions in May and June during runoff but conductivity, hardness, alkalinity and <br />secchi depth increased and dissolved oxygen declined in September during <br />baseflow (Table 41. <br /> <br />Fish community sampling <br /> <br />Nine nonnative and seven native fish species were collected including <br />endangered Colorado pikeminnow and humpback chub. Native fishes were more <br />abundant and widespread than nonnative fishes. Of the 11,370 fish collected, <br />including larvae, juveniles, and adults combined, 72 % were native species <br />composed of 43% flannelmouth sucker lCatostomus latipinnis) , 16% speckled <br />dace (Rhinichthys osculus), 10% bluehead sucker (C. discobolus), 3%, roundtail <br />chub, and less than 1 % of humpback chub, Colorado pikeminnow, and mottled <br />sculpin combined (Table 5). Nonnative species were composed of 18% sand shiner <br />(Notropis stramineus), 5% redside shiner (Richardsonius balteatus), 2% red shiner <br />(Cyprinella lutrensis) 1 % fathead minnow lPimephales promelas), 1 % white sucker <br />(C. commersom) and less than 1 % each of common carp (Cyprinus carpio), channel <br />catfish (lctalurus punctatus), creek chub ISemotilus atromaculatus) and plains <br /> <br />11 <br />