07/31/2008 Env Bd Packet - Laserfiche WebLink

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Reshanau Lake Management Plan decomposition of curlyleaf pondweed in the lake. Secchi disk transparency (SD) is the surrogate measurement for the depth that light penetrates the water column. This measurement is related to the depth of submerged aquatic plant growth. Typically plants will grow to a depth of 1.5 times the SD reading. SD readings can be affected by either sediment in the water column or by algae growth as measured by CHLA. The SD mirrors the CHLA concentrations. This suggests that water transparency is directly related to CHLA production and reduction of CHLA concentrations will improve water clarity. V. Situational Analysis Currently, no formal or informal group exists which is capable of making any decisions regarding the approval of any proposed plan regarding the Lake. There are at least three options that are being considered. 1) To establish an Association of Property Owners on the Lake and collect money to do whatever the group decides the money should be spent on. 2) To establish a "Lake Improvement District" (LID) which is a formal entity recognized and approved by the county and the city, which allows for the collection of funds through property tax bills, to be spent on studies and projects which benefit the district. There are a number of issues to be dealt with if we choose this option. 3) To ask the Rice Creek Watershed District to establish a "Special Taxing District" to collect money to administer this plan. In January 2005, a list of 153 property owners on Reshanau Lake was obtained from the Anoka County Geographical Informational Services (GIS) department. Recently, a mailing was sent to all of these property owners which outlines what is being proposed in this plan. It is our intent to contact and meet each of these property owners individually to obtain their approval of this plan in the form of a signed petition to be presented to the Rice Creek Watershed Board. VI. Objective The main objective is to form a cooperative effort between lakeshore property owners and the RCWD to improve the overall water quality and aquatic plant community in Reshanau Lake. Currently the lake is not a community asset because of excessive algal blooms. With some remedial activities, the lake can become an asset to the community and downstream water bodies. G: \Admin \Board \Agenda Paks \2005 Agenda Paks \2005 -04 -13 \Reshanau mgmt plan.doc5