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1997 Rainbow Family National Gathering

U.S. Forest Service Final Report


POPULATION COUNTS

It was extremely difficult to estimate the number of people at the Rainbow Gathering. We utilized a system of three traffic counters to calculate and confirm an estimated count. Two of the counters were historic in which we could determine prior year counts in the same area. This was determined to be approximately 75 vehicles each day for the same time period. The third counter was placed on a cattleguard just below the main parking areas. We used this counter to determine the number of vehicles. We then assumed that 2/3 of the count did not cross the counter more than once. For example 2/3 of the vehicles crossed the counter once going to the Gathering and once leaving the gathering We further assumed that each vehicle held three people.

(Traffic Count) X (2/3) X (3 People) = Total People

Rainbow Family National Incident
June/July 1997
Ochoco I National Forest
. Vehicle People
. Traffic 2/3 Traffic Daily (Veh * 3) Cumm
Date Count Count Increase + or - Total
6/26/97 0 0 0 0 0
6/27/97 700 470 470 1410 1410
6/28/97 1470 985 515 1545 2955
6/29/97 2440 1635 650 1950 4905
6/30/97 3597 2410 775 2325 7230
7/1/97 5368 3595 1185 3555 10785
7/2/97 6877 4610 1015 3045 13830
7/3/97 8405 5630 1020 3080 15890
7/4/97 10522 7050 1420 4260 21150
7/5/97 13109 8795 -1735 -5205 15945
7/6/97 15106 10120 -1335 -4005 11940
7/7/97 17015 11400 -1280 -3840 8100
7/8/97 18504 12400 -1000 -3000 5100
7/9/97 19202 12865 -465 -1395 3705

Historic records show that this traffic counter normally records approximately 75 cars per day. The 2/3 reduction takes this into account plus assumes that some traffic will return downhill.


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