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Last modified
1/26/2010 12:34:43 PM
Creation date
10/11/2006 10:55:53 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8441.600
Description
Colorado Big Thompson Project - Studies
Basin
South Platte
Water Division
1
Date
5/1/1951
Title
Recreational Use and Water Requirements of the Colorado River Fishery Below Granby Dam Colorado
Water Supply Pro - Doc Type
Report/Study
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<br />(7) <br />r- ) <br /> <br />f\:) <br />w <br />c..o <br />l-l> <br /> <br />-. <br /> <br />miles belo"!>! Granby Dam on which a record of fishing-use was made" During <br /> <br />1948.\1 observation of 2$782 fisherman=days rr use was recorded over 8 period <br /> <br />of 49 days" In 1949~ 4j98h fisherman-d?ys were recorded in 88 consecutive <br /> <br />deWS of observi'ltiono The 1948 observations extended throughout the snJne <br /> <br />period of time as those in 1949,~ h01'ITever ~ the total m.LTnber of days of <br /> <br />observation in 1948 was limited due to the omission of randomly selected <br /> <br />weekdays during the 88=day period" <br /> <br />40.. Based upon the above census,~ a weighted projection indicated <br /> <br />thAt the Colorado River received a minimum of 69738 man-days of fishing-use <br /> <br />in 1948 and 6.\1835 man=d~s in 1949 in the first 2102 river miles downstream <br /> <br />from the outlet to Granby Dam" In 1949 JI it waS further determined th~.t <br /> <br />there were at least 29832 man=days of fishing=use in the next 1703 miles" <br /> <br />By direct proportion,? it is estimated th8t this lower reach may have con- <br /> <br />tributed 2,792 fisherman-days in 19480 <br /> <br />410 In connection 'with personal interviews with fishermen on the <br /> <br />stream to collect data on fish caught and money expended, it waS found that <br /> <br />the average fisherman fished 2072 days per trip in 1948 and 2079 days per <br /> <br />trio in 19490 The average number of hours fished per fishing.day also waS <br /> <br />about equal in the tHO yearsJI th2t is, 4099 hours in 1948 as comp~red with <br /> <br />4069 hours in 19490 Based upon the average number of dl'lYs fished per trip <br /> <br />and allOWing for the fact that a.bout 10 percent of the time spent on the <br /> <br />river "!>laS by l1repel'lters" (those who made several trips during the sunnner) , <br /> <br />it is estimated that 2,238 individual fishermen in 1948 and 2.\1213 in 1949 <br /> <br />used the recreational resources provided by the Colorado River fishery in <br /> <br />the reach from Granby Danl to the mouth of Little Muddy Creek" Likevd.se, <br /> <br />it is estimated that 917 individual fishermen used the rea_ch from the mouth <br /> <br />of 1i ttle Muddy Creek to the bridge neClr Kremmling in 1949 and it is probable <br />that about ~m equal number used this reach in 1948" It c~m safely be said <br />~13... <br />
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