Page 70 - Clackamas County Watertourism Strategic Plan. Final.v3

STRATEGIC PLAN FOR WATER-BASED TOURISM IN CLACKAMAS COUNTY, OREGON THE PEOPLE
4-28

Estimating the total number of trips at a cost to the
Table 4-25 Estimated Market Demand for and Revenues from Willamette Falls Locks
participant is more complicated. The respondent was
WTP Respondent Market Market Average Estimated Estimated
trips Representation Size Party Size Demand for Revenue allowed to enter the number of trips for each of the price
Lockage categories. It is assumed that a person willing to pay $20 for
$0 1006 47% 166,668 2.70 29,155 $ - a trip is also willing to pay $5 for the same trip, but a person
$5 542 25% 166,668 2.70 15,708 $ 78,538 willing to pay $5 per trip is not willing to pay any more.
$10 305 14% 166,668 2.70 8,839 $ 88,391 There is an unknown amount of double counting
$15 160 8% 166,668 2.70 4,637 $ 69,554 incorporated into the results which cannot be accounted for
$20 117 5% 166,668 2.70 3,391 $ 67,815 and removed. For example, if a respondent stated a
Total Paid Trips 1124 52% 166,668 2.70 32,574 $ 304,298 willingness to take one trip at $5, one trip at $10, one trip at
Total Paid Trips at $5 1124 52% 166,668 2.70 32,574 $ 162,872 $15 and one trip at $20, there is no way to be sure that this
only means the person would take only one trip during the year
Total Annual 2130 100% 166,668 2.70
and pay any amount up to $20 or if the person would take 4
participation trips and pay 4 different prices amounting to $50 dollars
(including free trips)
6
spent . To address this issue, the trip estimation is
calculated at the upper and lower bounds to provide a range. The most conservative estimate would be to eliminate all double counting by calculating the number of trips at $20
only. This provides the lower bound estimate. The most generous estimation, the upper bound, would be to calculate all trips assuming there is no double counting.

Lower Bound WILLAMETTE FALLS LOCKS Upper Bound
ESTIMATED ANNUAL LOCKAGE
Estimate Estimate

3,391 32,574

Final Estimate
15,708
Lower Bound Upper Bound
ESTIMATED ANNUAL REVENUE FROM RECREATIONAL BOATING
Estimate
Estimate THROUGH WILLAMETTE FALLS LOCKS
$304,305
$162,870

6 A more robust market study would have resolved this unknown, but the survey questions on lock usage were inserted into an already large questionnaire to provide a general introduction to the topic. This survey
was not intended as complete a detailed market analysis of the demand for lockage.