05-12-2025 Agenda Packet Cc - regular meeting

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The Minnehaha Creek Watershed District classifies Stubbs Bay water quality as “poor.” The bay is impaired for excess nutrients due to phosphorus loading. This impairment results in nuisance algae blooms that limit the recreational use of this water body. Figure 1. Stubbs Bay Water Quality (MCWD) External phosphorous loading into Stubbs Bay has been reduced by protection of upland wetlands, storm water management regulations, conversion of land in the Stubbs Bay watershed from agricultural to residential and by projects done by the City of Orono and the Minnehaha Creek Watershed District in the early 2000’s. While more phosphorous loading models may be needed, it is believed the primary reason for the high phosphorous levels in the bay is internal loading. The SBLID will consider the development of water quality studies/plans or the implementation of water quality improvement projects (e.g. phosphorous sequestration) as part of a comprehensive approach to bay management. Such projects would likely require grant funding and/or a financial partnership with a governmental organization such as the MCWD or the LMCD. In accordance with Minnesota statutes, section 103B.571, for all projects proposed by the SBLID with a cost in excess of $5,000; a published notice and written notice shall be mailed at least ten days in advance to SBLID property owners and required local and state entities. Problems: 1. Eurasian watermilfoil, curlyleaf pondweed, and other AIS diminish the health of and interfere with recreation in Stubbs Bay. 2. Other AIS, including flowering rush, starry stonewort, and spiny water flea, may become established in Stubbs Bay are likely to have adverse impacts to the health and enjoyment of the bay. 3. Water quality in the Stubbs Bay is impaired for excess nutrients due to phosphorus loading. This impairment results in nuisance algae blooms that impact the ecological health and limit the recreational use of this water body. Objectives: 49