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<br />cost your household $_ every year, would you vote infavor of it? <br />(please circle one.) YES NO <br /> <br />The dollar amount, which is blank in this example, was filled in with one of 14 amounts <br /> <br /> <br />ranging from $1 to $350, randomly assigned to survey respondents. The range was picked <br /> <br /> <br />such that'at the low end, anyone that valued preserving the fish would very likely indicate <br /> <br /> <br />they would pay $1-3, while almost no one was expected to pay $350 per year. <br /> <br />The questionnaire was sent to a random sample of 800 households in the four comer states of <br /> <br />Arizona, Colorado, New Mexico and Utah (with the proportions based on the states relative <br /> <br />populations) and an additional 800 households in the rest of the U.S. We received 718 <br /> <br />responses, after deleting undeliverable surveys and deceased, yielded a response rate of 53.9 <br /> <br />percent. <br /> <br />The mean WTP was estimated to be $195 per household. This is the value for protecting all <br /> <br /> <br />nine fish in the six rivers. In particular, the WTP is to avoid extinction of four fish species <br /> <br /> <br />and increase the population of three species so they can be delisted. Our values appear to <br /> <br /> <br />pass an informal test of scale by comparing them to the $28.73 value estimated by Barrens, <br /> <br /> <br />et al. (1996) for just the silvery minnow in the Rio Grande River in New Mexico (one of the <br /> <br /> <br />nine fish species in our study). <br /> <br />For the purpose of policy decisions, this study showed there are significant values to <br /> <br />17 <br />