This paper incorporates a rich set of physical water quality attributes, as well as site and household characteristics, into a model of recreational lake usage in Iowa. Our analysis shows individuals are responsive to physical water quality measures. Willingness-to-pay estimates are reported based on improvements in these measures.
Egan, Kevin J.; Herriges, Joseph A.; Kling, Catherine L.; and Downing, John A., "Recreation Demand Using Physical Measures of Water Quality" (2004). CARD Working Papers. 394.