SPAWNING TIMING AND FRY EMERGENCE STUDY HANCOCK AND CALLIGAN CREEKS (FERC NUMBERS 9025 AND 8864)

Transcription

1 SPAWNING TIMING AND FRY EMERGENCE STUDY HANCOCK AND CALLIGAN CREEKS (FERC NUMBERS 9025 AND 8864) HYDRO WEST GROUP November, 1991 CASCADES ENVIRONMENTAL SERVICES, INC.

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3 TABLE OF CONTENTS r Page # I. Introduction II. Methods III. Results & Discussion A Hancock Creek Water Temperature...' Fry Emergence & Growth Spawning Timing of Rainbow Trout in Hancock Creek Recommendations B. Calligan Creek Water Temperature Fry Emergence & Growth Spawning Timing of Rainbow Trout in Calligan Creek Recommendations IV. Agreements Literature Cited - i -

4 USTOF TABLES Table # Description Page # 1 Air and Water Temperature Data, Hancock Creek, Snorkeling and Electroshocking Observations, Hancock Creek, Daily Temperature Units for Hancock Creek at Lake and IFIM Site, Spawning and Emergence Timing of Rainbow Trout in Hancock Creek, / Mean IS-day water temperatures, Hancock Creek Air and Water Temperature Data, Upper Calligan Creek, Air and Water Temperature Data, Lower Calligan Creek, Snorkeling and Electroshocking Observations, Calligan Creek, Daily Temperature Units for Calligan Creek at IFIM Site, ~.' Spawning and Emergence Timing of Trout Observed in Calligan Creek, Mean 15-day Water Temperatures at IFIM Site, Calligan Creek ~ LJ.

5 UST OF FIGURES Figure # Description Page # la Hancock Creek Mean Water Temperature, April - May, Ib Hancock Creek Mean Water Temperature, June - July, Ic Hancock Creek Mean Water Temperature, August - October, Hancock Creek Electroshocking Data, Cumulative Size Groupings-Rainbow Trout a Calligan Creek Mean Water Temperature, IFIM Site, April - May, b Calligan Creek Mean Water Temperature, IFIM Site, June - July, c Calligan Creek Mean Water Temperature, IFIM Site, August - October, Calligan Creek Electroshocking Data, Cumulative Size Groupings-Rainbow Trout Calligan Creek Electroshocking Data, Cumulative Size Groupings-Cutthroat Trout Calligan Creek Electroshocking Data, Cumulative Size Groupings-All Trout

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7 I. INTRODUCI10N Cascades Environmental Services, Inc. (CES) and Hydro West negotiated instream flows for rainbow trout winter rearing, spawning and summer rearing in both Hancock (FERC Number 9(25) and Calligan (PERC Number 8864) creeks. Rainbow trout spawning timing.in these creeks was uncertain and assumed to occur in June and July. To resolve this issue, CES developed a study plan in cooperation with Hydro West Group and Dr. Hal Beecher of the Washington Department of Wildlife (WDW). The objective of the study was to detennine the central 80% spawning timing of the rainbow trout populations in the bypass reaches of Hancock and Calligan creeks

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9 II. METHODS CES used two different techniques to determine spawning timing in the study reaches. The most common methodology for calculating the incubation and emergence period of eggs and fry uses temperature units. One Daily Temperature Unit (DTU) equals 1 F above freezing (32 F) for a 24-hour period. For example, if the water temperature for the first day of incubation is 56~, it would contnbute 24 DTU. Temperature units required for a given species of fish are not fixed. They will vary with different water temperatures and are affected by fluctuations in temperature (piper et al. 1982). Another commonly used indicator of the onset of trout spawning and summer rearing activity in the Cascade Mountains is the increase in stream temperatures to above 8 C, or 46.4 F (Campbell and Neuner 1985a). Conversely, winter behavior and changes in depth and velocity preferences typically begin when stream temp'eratures drop below this threshold (Campbell and Neuner 1985b). CES inst~lled thermographs to record air and water temperatures in April at three different locations: 1) downstream of the outlet to Hancock Lake on Hancock Creek; 2) downstream of the outlet to Calligan Lake on Calligan Creek; and 3) at the IFIM site on Calligan Creek. Data Loggers recorded mean air and water temperatures every two hours. We downloaded the data from the sites every 6-8 weeks. We surveyed Calligan and Hancock creeks once per week from June through September, with a final survey in October. CES snorkeled the streams to observe fish and note the onset of fry emergence. After we documented fry emergence, we electroshocked index areas in both streams to. sample fry populations, noting length and species when possible. We developed cumulative fry emergent timing curves for each stream. CES determined the central 80% of the emergence timing curve, per agreement of the parties, and we backcalculated rainbow trout spawning ~mlng using fry emergence data and temperature information gathered from the Data-pods

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11 m. RESULTS AND DISCUSSION A Hancock Creek 1. Water Temperature. Table 1 descnbes minimum, mean and maximum air and water temperatures at the gaging site below Hancock Lake. Water temperatures at the gaging station varied from a 2-hour mean low of 39.'?F on April 18 to a 2-hour mean high of 7430f" on July 23. Mean water temperature of the period of record was 55.2~. The gaging station on Hancock Creek is located in a broad, flat, slow-moving section of stream below the lake outlet which receives a great deal of solar radiation. The remainder of the stream, however, travels through much narrower, steeper, and confined channels that are often shaded. From April through mid-june, temperatures at the IFIM site, index areas and gage station were fairly equivalent (Figure 1a). By June 23, however, temperatures in the bypass reach began to deviate from temperatures recorded at the gage station by as much as 12 F (Figures Ib-c). When discrepancies existed, CES used temperatures recorded in the bypass reach for the study calculations. 2. Fry Emergence and Growth CES started snorkeling Hancock Creek on June 1. We observed several pairs of rainbow trout, but could find no evidence of newly-rlug redds. When we first observed fry near the outlet to the lake and the bypass reach on June 22, CES began electroshocking the stream to collect fry abundance and length data. Table 2 summarizes trout fry observations in Hancock C-!"eek. We conducted a length frequency analysis and Figure 2 depicts cumulative emergence timing of rainbow trout in Hancock Creek by size classes (35mm, 40mm and 45mm). We used the central 80% of the run timing curves, discarding the "tails." Using this methodology, CES determined the central 80% emergence timing of rainbow trout fly «= 35mm) spanned the period July Spawning Timing of Rainbow Trout in Hancock Creek. Table 3 presents Daily Temperature Units (DTU) at the Hancock Creek gaging station and the bypass reach. In Hancock Creek, where mean water temperatures remain between 500F and 600F during the spawning and incubation period, approximat~ly 765 DTU are required for emergence of rainbow trout fry (Leitritz and Lewis 1976). Table 4 shows spawning and fry emergence timing of rainbow trout in. the Hancock Creek bypass reach. By using the central 80% fly emergence curve and back- -5-

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13 TABLE 1. Continued HANCOCK CREEK May 1991 Air H2o Air H2o Air H2o Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min 39.n Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min n Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min n Min Avg Avg Avg n Max Max Max Min Min Min 43.72" Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min 39.n Avg ~n Avg Avg Max Max Max Min Avg Max

14 TABLE 1. Continued HANCOCK CREEK June 1991 r r Air H2O Air H2O Air H2O Min Q Min Q Min Avg Avg Avg Max SO.81 Max Max Min Q Min Q Min Avg SO.51 Avg Avg Max Max Max Min Q Min Min Avg Avg Avg Max Max Max Min Min Q Min Avg Avg Avg Max Max Max Min Q Min Q Min Avg Avg Avg Max Max Max Min Min 41.n Min Avg Avg Avg Max Max Max Min Q Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Q Min Min Avg Avg Avg f' Max Max Max ~ 60:.-. L Min SO Min Min !l" "'j;" :i: Avg Avg 47.n Avg t Max Max Max Y-(!i: ji? ri ~~ ~ 1~. t II n u

15 TABLE 1. Continued HANCOCK CREEK July Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg 53~ Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg 59.2S Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Avg Max

16 --- r TABLE 1. Continued HANCOCK CREEK August 1991 Air H2O Air H2O Ale H2O Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max ~ Min Min Min Avg Avg Avg Max Max Max i;; Min Min Min ~,. Avg V Avg Avg ~ Max Max Max fi, Min ~ Avg Max r--.., ~~ ~ ti n

17 TABLE 1. Continued HANCOCK CREEK September 1991 Air H2O Air H2O Air H2O Min Min Min Avg Avg Avg Max Max Max Min 43.n Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min ~45 Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min SO Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max

18 r- TABLEt. Continued HANCOCK CREEK October 1991 r- Air H2O Air H2O Min Min Avg Avg Max Max Min Avg 49.Zl Max Min Avg Max Min Avg Max Min Avg Max Min Avg Max Min Avg Max Min Avg Max Min f: Avg ~;j Max Min ~"' Avg ;;;.. Max 65.CJ L $":4 ~:; ~ b -12 -

19 Fig 1 a. Hancock Cr. Mean Water Temp. Below Lake Outlet, April - May, ~i ~ 51 I ~~< ~ 50~ ' G:" '-" 48 Q) ::l 1tS... Q) c... E ~ I v 43 I t 42' I I April Date May

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21 Fig. 1 b. Hancock Cr. Water Temperature June - July, 1991 (2... Q) ::3 1a Q) a. E 56 ~ Date June July [ - Below Lake Outlet -I- IFIM Sit-e----J

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23 Fig. 1 c. Hancock Cr. Mea'n Water Temp. August-October, i ~ 651 A ~----- ~ ""'-" Q) '- ::l 1a '- 0> a. E ~ I >1 ) I 45 ',, i August 30 5 Date Sept. c=~i;;-l;k~ ()~~I~t-~IFIM-Site. J Oct.

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25 Table 2. Snorkeling-and Electroshocking Observations, Hancock Creek, Date Method Location W.Temp Fish # LS. Length Spp Comm Snork Pool 52 1 Juv Unm BT 2 Ad Unm cr 6 Ad Unm Unk 2 pairs 7 Juv Unm Unk Abv. Pool 1 Juv Unm Unk Lower 52 6 Ad Unm RB 7 Juv Unm RB 6-8 Snork Pool 52 6 Ad Unm Unk 17 JUY Unm Unk Lower Ad Unm Unk 40 Juv Unm Unk 6-15 Snork Pool 53 7 JUY Unm Unk 16 Ad Unm Unk Lower 53 7 Ad Unm RB 22 JUY Unm RB Lake Snork Lake 55 1 Juv Unm RB Fry larger 25 Fry Unm Unk than Calligan Pool 54 3 Ad Unm RB 11 Juv Unm RB 6 Fry Unm Unk 1 Juv Unm BT 1 Ad Unm cr Mort Lower Juv Unm RB 12 Ad Unm RB 15 Fry Unm Unk Newemerg 7-5 Electro Lake 61 0 Electro? 7-13 Electro Pool 56 0 Lower 56 1 Fry 33 1 Ad Fry 36 1 Fry 35 1 Fry 39 1 Ad Fry

26 .. r Table 2. Snorkeling and Electroshocking Observations, t. Hancock Creek, (CONTINUED) ;~ Date Method Location W.Tem~ FISh # LS. Length S22 Comm 7-21 Electro Pool 56 1 Fry 3.5 RB 1 Fry Unm Unk 1 Fry 3.2 RB Lower 46 1 Fry 40 RB 1 Fry 35 RB 1 Fry 50 cr/br 7-27 Electro Pool Unk 1 Fry -25 Unk 1 Fry 32 RB 1 Fry 27 cr 1 Fry 27 cr 1 Fry 38 RB 1 Fry 30 RB 1 Fry 29 RB Lower Unk 1 Fry -30 Unk 1 Fry 31 RB 1 Fry -30 Unk 1 Fry -25 Unk 1 Fry -30 Unk 1 Fry -35 Unk 1 Fry -25 Unk 8-12 Electro Pool Lower Fry 40 RB 1 Fry 52 RB 1 Fry 48 RB 1 Fry 46 RB 1 Fry 43 RB 1 Fry 45 RB 1 Fry 48 RB 1 Juv 70 RB 1 Fry -45 RB 1 Fry -45 RB ~ ~i 11 -.,,~.:' ~ :.<. 1 Fry -45 RB 1 Fry 38 RB ;n ~c: 1 Juv 74 RB ti 8-18 Electro Pool 59 1 Fry 43 RB f", 1 Fry 40 RB ~ ~ tj 0 D

27 Table 2. Snorkeling and Electroshocking Observations, Hancock Creek, (CONTINUED) Date Method Location W.Temp FISh # LS. Length Spp Comm 8-18 Electro Pool 59 1 Fry 55 RB 1 Fry 37 RB 1 Fry 32 RB 0-1 Fry 49 RB 1 Fry 38 RB 1 Fry 52 RB 1 Fry 45 RB 1 Fry 46 RB 1 Fry 43 RB 1 Fry 46 RB 1 Fry 48 RB 1 Fry 41 RB 1 Fry 37 RB 1 Fry 43 RB 1 Fry 43 RB 1 Fry 55 RB 8-31 Electro Pool 57 0 Lower Electro Pool 52 1 Fry 67 cr 1 Ad Unm cr 1 Ad Unm cr 1 Fry -60 Unk 1 Fry 67 cr 1 fry 67 cr Lower 52 1 Fry 55 cr 1 Fry 49 cr 1 Fry 49 cr 1 Fry 52 cr 1 Fry 43 cr 1 Fry 40 cr 1 Fry 37 cr 1 Fry 46 cr 1 Fry 52 RB 1 Juv 73 RB 1 Fry 52 cr 1 Juv 73 RB 1 Fry 52 RB 1 Fry 52 RB 1 Juv 73 RB - I Fry 58 RB 1 Fry 58 RB 1 Fry 52 RB

28 r ~ Table 2 Snorkeling and Electroshocking Observations, r:~ Hancock Creek, (CONTINUED) Date Method Location W.Temp FlSh# L.S. Length Spp Comm Lower 52 1 Fry 49 RB. 1 Fry -49 Unk 1 Fry 43 RB 1 Juv 113 cr 1 Fry 52 RB 1 Fry -52 Unk 1 Juv 73 RB 1 Fry 46 RB 1 Fry 52 RB 1 Fry 49 RB 1 Fry 40 RB 1 Fry 40 RB 1 Fry -40 Unk 1 Fry 67 RB 1 Fry 70 RB 1 Juv 116 RB 1 Fry 46 RB 10-6 Snorkel Pool 47 Juv Unm cr 2 Juv Unm RB 4 Ad Unm cr Below Pool 1 Juv Unm cr 1 Ad Unm cr Lower 61 Juv Unm cr 8 Ad Unm cr - 22-

29 100% i =- rig 2. Hancock Cr. Electroshocking Data Cumulative Size Groupings-Rainbow Trout - =- 90% 80% 70%... c: Q) (.) '- Q) a. Central 80% 0% -=, Date (1991) [ --- ::-~ITl-;-~-~:~~mm -*- < =45mm._-. -' - tot~1 J

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31 Table 3. Daily Temperature Units (DTU) for Hancock Creek, at lake and IFIM site, Lake H2O Site Est. Te~p. OW EstOTIJ Month Day @SITE ' S IS.49 IS ~ IS IS S IS

32 .. Table 3 Continued Lake H2O Site Est. Temp. D1U EstDTU r ~ Month DaI @SlTE I L ~.~: ii i.o-j , It -.;- ;:...,~ ; n U n ~

33 Table 3 Continued Lake H2O Site Est. Temp. D1U EstDTU Month "Day @SITE ~ ; : J:)O

34 ,~ Table 3 Continued Lake H2O Site Est. Temp. oro Est oro Month Day @SITE r! : ;: 8 Z JJ ~ ~ : ~i , ~."" ~ fj v:; U fl u

35 calculating 765 DTU's, CES estimated that the majority of rainbow trout spawned in the bypass reach from June 8-25, If we were to increase the size of the fly used in the analysis «= 45mm), spawning timing would extend from June 8 through July 18, As we mentioned earlier in this report, Campbell and Neuner (1985a) demonstrated that temperatures exceeding 8 C (46.4 F) could trigger spawning and summer rearing behavior in Western Washington, Cascade Mountain trout populations. Table 5 shows 15-day mean temperatures in Hancock Creek below the lake outlet and in the bypass reach. Temperatures rose to exceed 46.4 F during the 15-day period beginning May 1; however, the temperature patterns we observed in 1991 were atypical. Air temperatures usually begin to increase in late May, resulting in snow melt and runoff through the end of June or the beginning of July. Stream temperatures will typically remain low throughout the end of the snow melt period, then increase as streamflow levels drop and air temperatures rise. In 1991, however, the climate remained cool and rainy until the beginning of July. Consequently, the persistent rainfall gradually melted the snowpack throughout the entire spring/early summer period. Stream temperatures remained,higher than would have been expected in a typical spring and spawning occurred earlier in 1991 than in a more "nonnal" year. Table 4. Spawning and Emergence Timing of Rainbow Trout in Hancock Creek, / Size Emergence Timing 2L S12awning Timing 2l <=35 mm July June 8-25 <=40 mm July 13 - Aug 18 June 8 - July 18 <=45 mm July 13 - Aug 18 June 8 - July 18 1/ Based upon 765 DTU to emergence in -50 degree F water. 2/ Based on Central 80% emergence timing

36 Table 5. Mean 15-day water temperatures, Hancock Creek. Date Lake Site Apr May May June Jun Jul Jul Aug Aug Sept Sep Oct I E!(" ~'- ~ 4. Recommendations CES recommends that the rainbow trout spawning and summer rearing flows (20 cfs) be required in Hancock Creek from June 16 through October 15 of each year. This flow regime allows adequate protection for rainbow trout spawning in an atypical year (such as 1991) while providing flows which would maximize habitat availability in years when we would anticipate streamflows and temperatures to be more consistent with observed trends. Winter instream flows of 5 cfs would be implemented from October 16 ~~~ June 15 per agreement of all the parties..,., B. Calligan Creek Calligan Creek has a subversion zone downstream of the lake outlet. The creek seeps into the ground near the lake outlet and dries up during most summers. Nearly one mile downstream, the water re-emerges as a spring; it maintains a relatively constant and stable temperature regime during the summer months.

37 1. Water Temperature CES installed two temperature monitoring sites on Calligan Creek: 1) 100 yards downstream of the lake outlet near the subversion zone; and 2) at the IFIM site, immediately below the spring. Table 6 presents minimum, mean and maximum air and water temperatures at the gaging site below Calligan Lake. Water temperatures varied from a 2-hour mean low of 38.SOF on October 4 to a 2-hour mean high of 6O.goF on June 30. Mean water temperature for the period of record at the site was 49.00F; however, water temperatures from July 1 through September 30 were excluded from the analysis because the upper stream was dewatered.. Table 7 displays minimum, mean and maximum air and water temperatures at the IFIM site, immediately downstream of the spring. Mean water temperature for the period of record was 46.6 F. Stream temperatures varied from a 2-hour low of 43.1 F on April 18 to a high of 53.g<>F on August 17. Mean daily temperatures deviated < 5 F during the entire period of record (Figures 3a-c), indicating the spring maintains fairly constant temperatures. Water temperatures in the bypass reach tended to be higher when. there was still overland flow below Calligan Lake in the subversion zone and these waters and the spring mixed at the IFIM site. As the flows from the lake diminished and gradually disappeared, however, water temperatures at the IFIM site decreased and remained low. 2. Fry Emergence and Growth CES started snorkeling surveys on June 1 in Calligan Creek. When we first observed over 70 fry near the outlet to the lake on June 22, CES began electroshocking the stream to collect fry abundance and length data. We did not observe any fry in the bypass reach on this date, but water temperatures in the study reach were colder. Table 8 Summarizes trout fry observations in Calligan Creek. We conducted a length frequency analysis and charted emergence timing of those trout we observed in the bypass reach. CES excluded those fish captured near the lake outlet from the analysis. We measured and identified all captured trout fry, when possible. In some cases, fry escaped before we could determine the species and length. In these instances, we estimated the length, left the species unknown, and excluded the observation from species-specific analysis. We did conduct an analysis, however, where we included all fish observed, regardless of species. Figure 4 portrays cumulative emergence timing of rainbow trout in Calligan Creek by size classes (3Smm, 40mm and 45mm, N = 62). We used the central 80% of the run timing curves~ discarding the "tails." Using this methodology, we determined the

38 TABLE 6. AIR AND WATER TEMPERATURE DATA., r t UPPER CALLIGAN CREEK, ~ UPPER CALLIGAN CREEK April 1991 ':" Air H2o Air H2o Min Min Avg Avg Max Max Min Min Avg Avg Max Max Min 33.Z Min Avg Avg Max Max Min Min Avg Avg Max Max Min Min Avg ' Avg Max Max Min Min Avg Avg Max Max jt~ Min Avg Max il: Min Avg Max r: :r.~ itd Min ::~ Avg Max Min : : Avg b Max : " ~ U U ~~ :. t fj : t... ~

39 TABLE 6 CONTINUED UPPER CALLIGAN CREEK. May 1991 AIR H2o AIR H2o AIR H2o Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Avg Max

40 TABLE 6 CONTINUED UPPER CALLIGAN CREEK ~ June ~ Air H2O Air H2O Air H2O Min Min Min Avg 49~ Avg Avg Max Max Max r!'; lit.!' Min 42.0S Min Min Avg 4S Avg Avg Max Max 4S Max Min Min Min Avg Avg Avg Max Max Max Min 3S Min Min Avg Avg Avg Max Max ' Max :, Min Min Min Avg Avg S Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg SO.73 Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max L Min Min Min r~...,: 5; -:Avg Avg Avg Max ~'* Max Max ~ ~. ~ Min Min Min ~ :.. Avg Avg Avg Max Max Max i~ i l--l ~. ~;.: ~ r.-" ;;. ~ - U ~ U ~

41 TABLE 6 CONTINUED UPPER CAWGAN CREEK July 1991 Air H2o Air H2o Air H2o Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min (J Min Avg Avg Avg Max Max Max Min Min (J1-28:-91 Min Avg Avg 53.V Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max 65.CJ Min Avg Max

42 ":~- TABLE 6 CONTINUED UPPER.CALLIGAN CREEK..-- August 1991 Air H2O Air H2O Air H2O Min Min Min Avg Avg Avg Max Max Max Min Min Min _ Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min MUl Min Avg Avg Avg ~55 Max Max Max Min Min Min Avg Avg Avg ;:. ~ Max Max Max Min Min Min , f'~ ' -<Avg Avg Avg :-1 Max Max 7LOO Max, r I Min Min Min ; Avg Avg Avg Max Max Max " Min Avg Max ~ ~

43 TABLE 6 CONTINUED UPPER CALLIGAN CREEK September 1991 Air H2O Air H2O Air H2O Min Min Min Avg Avg Avg Max Max Max Min Min :91 Min Avg ~7 Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min _ Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max , - 37-

44 TABLE 6 CONTINUED I: UPPER CALLIGAN CREEK, October 1991 i Air H2O Air H2O r Min Min :~ Avg Avg Max Max Min Avg M~ Min Avg Max ;: Min Avg Max Min Avg Max Min Avg Max Min Avg Max i Min Avg Max :L ~"; Min Avg Max :r-" Min Avg Max );.' ii;.,- "-... ~r!i1-38-

45 TABLE 7. AIR AND WATER TEMPERATURE DATA, LOWER CALLIGAN CREEK, LOWER CALLIGAN CREEK April 1991 Air H2o Air H2o ;.91 Min 41.n Min Avg Avg Max Max Min Min Avg Avg Max Max Min Min Avg Avg Max Max Min Min Avg Avg Max Max Min Min Avg Avg Max Max 46.1" Min Min Avg Avg Max Max Min Avg Max Min Avg ' Max ':91 Min Avg Max Min Avg Max

46 TABLE 7 CONTINUED LOWER CALLIGAN CREEK May 1991 r.. ' Air H2o Air H2o Air H2o Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max ~ Min Min Min Avg Avg Avg Max Max Max ;" :."" t"( Min Min Min Avg Avg Avg Max Max Max ~ : Min Avg Max ~:t ~ , U U n

47 TABLE 7 CONTINUED LOWER CAUUGAN CREEK JUNE 1991 Air H2O Air H2O Air H2O Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max SO.07 Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max n Max Min Min Min Avg Avg Avg Max Max Max

48 '" r I TABLE 7 CONTINUED r- LOWER CALLIGAN CREEK July 1991 Air H2O Air H2O Air H2O Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max L _Min Min Min Avg Avg Avg Max Max Max Min Min Min Avg Avg Avg Max Max Max ~.-;!?\:.~:. it.; 7'-~ M Min ~ Avg Max W ~:... ~ tl U n