2024 Weed Treatment Program
July 2024 Spot Treatment Map
June 2024 Weed Harvesting Map
May 2024 Weed Treatment Map
2023 Weed Treatment Program
Notice on current Algae blooms: June 19, 2023
Our May Milfoil treatment was a larger area than past years at approximately 50 acres (see map below). The large biomass resulting from this weed kill decomposing in the lake is an increase in Algae blooms. MLS has been notified, is aware of the algae blooms and will treat for the Algae as soon as we can get them here. There will be no restrictions on water use or swimming from the Agae treatment.
June 2023 Weed Harvesting Map
May 2023 Treatment Plan
2022 Weed Treatment Program
August 2022 Proposed Treatment Notification:
Focus on spread of Starry Stonewort in front of Resort and Milfoil persistence On South Shorelines of middle section and South End of the Lake
June 2022 Weed Treatment Notification
Starting next week, Lake re-treatment and Harvesting Plans will commence. As a result of the June 14th Lake Survey conducted by A.E. Progressive we will conduct a spot re-treatment of Crooked Lake per the below June 15th Treatment map. Targets will be Starry Stonewort at the outlet of the lake, Algae control on West side of the Lake near the park and Milfoil spots at the South end of the lake. Starting one 20th we will begin weed harvesting for native weeds in the approximate areas of the map below covering approximately 43 acres. Please look for restriction notifications related to these treatments.
May 25th Treatment Map.
Below is the proposed map develped from the May 18th lake survey outlining the initial chemical treatment for the 2022 weed program for invasive weed species. The map gives you a perspective on where the focus of the treatment program will be located as well as were we have identified trouble areas around the lake. It should be noted the Starry Stonewort has spread into the outlet portion of the lake
2021 Weed Treatment Program
Weed Harvesting Program to begin in August, 4th 2021
The Crooked Lake Inland Lake Board has authorized a contract with PLM Lake and Land Management for weed harvesting approximately 40 acres of our shoreline. The goal is to reduce the native weed growth that is currently outside of the scope of our weed control program permit. The focus will be primarily on celery or eel grass and broadleaf pondweed which have typically been excessive by late July, early August. This year both species appear to be worse than previous years due to the early season warmer temperatures. Mechanical Harvesting is allowed on Michigan lakes to supplement the chemical weed control program. Harvesting work has begun on the lake and will continue through the 10th. Harvesting areas are noted on the map below.
August 4th, 2021 Additional Weed Treatment Notice
The Crooked Lake Inland Lake Improvement Board has requested additional weed control treatment this week to address areas around the lake where we have pronounced Algae plumes and additional treatment for Starry Stonewort near the Boat Launch on the North Shoreline. Treatment map is below:
June 24 - 25, 2021 Additional Weed Treatment Notice
The Crooked Lake Inland Lake Improvement Board has requested additional weed control treatment this week to address spotty areas around the lake where Eurasian Milfoil and Curly Leaf Pondweed are still persistent. Treatment will begin Thursday June 24th per the treatment plan below and will result in a 24 hour restriction on swimming. Note all other restrictions on the postings going up on Wednesday. During the survey conducted around the lake on Tuesday June 22nd, several issues are impacting the poor overall weed conditions on the lake it is important for association members to understand the limitations to our current weed control program
Unusually warm temperatures in April and again in June have accelerated weed growth of all variations both invasive and native. Milfoil was spotted near the surface in early May much earlier than normal and initial lake treatment for the first time was conducted in the month of May. This particular treatment for Milfoil is a systemic herbicide and can take up to 4 weeks to affect the plants. Survey noted the diquat herbicide it is now working in all locations however spot treatment has been requested to ensure 100% effectiveness.
Weed control permits only allow for treatment of invasive species of weeds or native species hindering navigation. Native species like the broad leaf pondweed (brown/copper color) will not be generally treated. Spot treatments affecting navigation is scheduled as shown (nuisance natives). Lake treatment is limited to the 5 ft depth contour or 100’ from shoreline which ever occurs first. Therefore weed treatment will not be occurring under docks and in swimming areas along the shoreline. Lake front owners can mechanically remove the weeds in these locations (see are FAQ in the members section)
The Crooked Lake Inland Lake Improvement Board has. requested bids for mechanical harvesting to address some of the heavier areas of weeds along docks and shorelines. The Inland Lake Board believes this could address some of the native weed issues we are experiencing. However, due to the same issues hindering other commercial segments post COVID lock down, lack of manpower may prevent a 2021 cutting on the lake. We will inform once we have heard back from CLIB consultant and committee members on the request for harvesting.
May 25 - 27, 2021 Weed Treatment Notice
The Crooked Lake Inland Lake Improvement Board has requested the weed control contractors start application this week. Postings have gone up and people will be unable to swim until 6 p.m. on Thursday, May 27. The Board (different from the association) has requested a combination of treatments prior to the start of the holiday weekend as the Pondweed and Milfoil are particularly bad right now. Boat traffic has caused Pondweed and Milfoil cuttings to wash up on shorelines potentially spreading these invasive weeds. Everyone on the lake will be able to safely swim beginning Friday, May 28 so weekend activities will not be impacted. Everyone’s patience is appreciated as the Inland Lakes Board tries to get ahead of potentially a much larger weed problem if treatment is delayed. See below map to show where treatments are being targeted.
