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Teem ra ~u re <br />:• eSLLtS . <br />I'id-GprinC te^~Ucratures began a„ aoout 5oC ana Lradually was--ed into early <br />July, r:hen ter..perstures rose s!~arply ::ith the ac'v°:~`, of warner v.~eather and law <br />flotia. Temperatures of l~ - 18oC +%e re coa:;nn ir. this period and it is li.l~ely <br />that tl~cy rose to over 2L',oC durinE some porticns of the day. Diurnal terperature <br />~ c, , 9,7 eac.~.e.. 2~.5 C. The high te-perature period <br />hi s taker, durin- mid-Jul; 1 ' r ~ ~ o <br />lasted frog. earl; Auwst. to early September l~:i~e.^. it bean to decline. High <br />temoeratures •.:ere noted on Cctober 1, trhich ::ere urmsua].ly hiGh. <br />Station I:F-4b reflected Ilorth Fork water and that o: Diiruzesota CreeY, and <br />tended to be lo:aer than the station gust above it. F:inn_sota Creek temperatures <br />varied from that oS the North Fork by up to 5oC at times, however the pattern was <br />not co^sistentl}• above or below the North Fork. <br />• Comnarisons <br />Temperature ranges for April -October 1978 Here similar to the 1977 year but <br />showed a sharp rise in early July, as compared to a sharp but lesser rise in April <br />of 1977. In general the waters warned more quickly in 1977 than 1978. This was <br />most likely due to the very small amount of snoi.•rcelt runoff in 1977 compared to <br />197a. <br />Significance <br />There were no consistent differences between stations suggesting thermal <br />• <br />pollution, hoi+ever there did appear to be a general cooling of water between upper <br />stations and the lower station tv~F-4a. At least part of this difference is due to <br />the sa.•rpli_zg times, which began earlier in the day at the downstream station. <br />• Samples were usually taken during morning or early afternoon hours <br />3- 7 <br />