The cost would be determined with the help of engineers who have done this type of work previously here in WI. The costs would be incurred in three primary areas – the administrative efforts to scope and manage the process/project, the construction, and the ongoing maintenance which will be relatively small compared to the one-time construction expense. Prior to having an engineering-informed cost estimate, the Dam Committee will be contacting other lake districts who have undertaken this process in order to better understand the range of costs that have been previously incurred. However, it is worth noting that there are many types of dams, each environment is unique, and the inflation costs of construction are currently unpredictable, so there is a meaningful risk in attempting to estimate the realistic cost of a future dam based on the cost of one that has already been built elsewhere.
Funding sources include general tax levys, special charges levy, or assessments raised from lake residents and stakeholders who are part of the lake district, in addition to state grants that could fund up to 50% of the construction costs. Additionally, low interest loans are available to Lake districts which would enable construction to begin and for the costs to be paid over a period of up to 20 years.
According to WI State Statute Chapter 33, a general tax levy or special charges levy may not exceed a rate of 2.5 mills of equalized valuation as determined by the department of revenue. (1 mill is equal to $1.00 of property tax levied per $1,000 of a property’s assessed value) For example, the maximum annual assessment for a property with an assessed value of $250,000 would be $250.
In general terms, based on conversations with those who have been through this before and the successful completion of other similar projects elsewhere in the state, it is believed that the costs would not be insurmountable and that they would likely be far less than the property value loss incurred if the lake were to no longer exist.