. Big Hole River Arctic Grayling Restoration Project annual report : 1992. Arctic grayling. Angling pressure decreased in all reaches as the summer progressed. Total pressure in Stratum I (May 15 - July 26) comprised 54% at 50,352 angler-hours. Pressure decreased to 31,115 angler-hours in Stratum II (July 27 - September 6), and declined again to 11,350 angler-hours in Stratum III (September - October 18). Catch rates (fish/hour) of grayling varied from the upper reaches to the lower reaches (Figure 16). Table 3 lists grayling catch rates by strata and reach. Catch per Hour. 9 Reach Figure 16.
. Big Hole River Arctic Grayling Restoration Project annual report : 1992. Arctic grayling. Angling pressure decreased in all reaches as the summer progressed. Total pressure in Stratum I (May 15 - July 26) comprised 54% at 50,352 angler-hours. Pressure decreased to 31,115 angler-hours in Stratum II (July 27 - September 6), and declined again to 11,350 angler-hours in Stratum III (September - October 18). Catch rates (fish/hour) of grayling varied from the upper reaches to the lower reaches (Figure 16). Table 3 lists grayling catch rates by strata and reach. Catch per Hour. 9 Reach Figure 16. Catch per hour for grayling by stratum for the Big Hole River creel census, 1992. Table 3. Catch rates (fish/hour ± 95% Confidence Interval) for grayling by section and stratum in the Big Hole River Creel Census, 1992. Reach STRATA 1 I 5/15-7/25 II 7/26-9/6 III 9/7-10/18 Combined A (±) (±) (±) (±) B (±) (±) (±) (±) C (±) (±) (±) (±) D 26. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Byorth, Patrick A. (Patrick Arthur); Fluvial Arctic Grayling Workgroup; Beaverhead National Forest (Mont. ). Dillon? : Montana Dept. of Fish, Wildlife, and Parks
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