8.1 SR 09-05-2023 - Laserfiche WebLink

Home Browse Search

D ono= JS IMPROVEMENT DISTRICT Lake Management Plan The Lake Management Plan was first developed in 2004 through the Central Minnesota Initiative Foundation's Healthy Lakes program in conjunction with the Lake Orono Improvement Association, the City of Elk River and the Sherburne Soil and Water Conservation District. It was updated periodically with minor adjustments. There was a major revision in 2017, and it is a living document which will be updated approximately every 5 years. In 2019 the Orono Lake Improvement District (OLID), anew local government unit partner, was formed by the City Council at the request of the lake association. The Lake Orono Improvement Association dissolved in 2020, however lake residents continue to hold informal social events. 2021- 2026 plan development is underway. Five main areas of concerns listed in the Plans are: • Sedimentation management • Proliferation ofcurly-leatpondweed • Prevention of additional aquatic invasive species (AIS) • Impairment of water quality • Native plant overgrowth and algae 2021-2026 Lake Management Plan (draft 2023 budget) Download Q7q OLID MCI) .-. Home Lake Management Plan Documents & Map Other links Contact Aquatic Vegetation Aquatic . ' a .�t2tfui, .. .. = Water Quality M Lake vegetation management In order to address the concerns of Curly -leaf pondweed (CLP) and native plant overgrowth and algae, we must first prove that a problem exists. This is done with a Point -Intercept Survey, whereby the quantity of the aquatic plants, both invasive and native, are counted in "rake fulls" at 75-meter increments across the entire lake. If needed a consultant also will do a "meander survey," which counts the plants in a designated area as the 75 meters is sometimes too far apart. 2019 - Contract with external consultant(s) expertise to assist in additional surveys, other data collections, effectively analyzing and addressing invasive plants (AIS), native plant overgrowth and algae proliferation and/or meet MN DNR requirements for an AIS permit variance. 2019 Budget: $4,245 - Remaining: $1,231 2020 - Initial meeting with consultant and Sherburne SWCD. Aquatic Vegetation Management is one element of the 2021-2026 Lake Management Plan. 2021- Paid for an added June point -intercept survey to document the late emergence of Curly -leaf pondweed. 2022 - Purchased Lowrance HDS-7 sonar system and licensed BioBase software to track sediment build-up for future dredging projects and to map aquatic vegetation. BioBase is free for local government use, which saves the OLID $2,799 annually (May 24, 2022 maps and data link). 2023 - Purchased second sonar system.