Author: John W. Duffield

Publisher: Forgotten Books

Published: 2018-08-08

Total Pages: 82

ISBN-13: 9781391155494

Excerpt from Economic Value of Instream Flow in Montana's Big Hole and Bitterroot Rivers The recreational value model is demonstrated in an application to the Big Hole and Bitterroot Rivers ln Montana. The Big Hole River 18 one of the premier trout fisheries in North America, and the Bitterroot River is popular with anglers and shoreline users. Valuation is based on experienced flow levels within a cur rent trip valuation model, with quantity of use measured by onsite observation. A broad range of flows was experienced during the May to August sample season, because the summer of 1988 was one of the driest on record. Marginal values per acre-foot at low flow levels were found to be in the $10 to $25 range. The value of flow preservation was estimated in the onsite survey by asking users to specify their preferred flow level and their willingness to pay into a trust fund for maintaining preferred flows. Marginal acre-foot values of $4 to $10 were derived for a flow increment from historical to preferred flows in July and August. If flows delivered to these study sections could be assumed to have similar impacts on users of the entire river, acre - foot values are $25 to $35. Preservation values varied by user group, with Visitors from outside Mon tana having values that were roughly double those of Montana residents on the Bitterroot and three times those of Montana residents on the Big Hole. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.