Hatlem Pond was dredged in 2014 and has been filling in with accumulated sediment, as expected. The questions that are before us today are: how much has it filled in since the dredge and what is the fill rate? The Glen Lake Association Board of Directors has created a four member task force to look into the future of Hatlem Creek and pond and are monitoring the situation.
In the coming weeks, Spicer Engineering, Inc. will once again –this will be the third time –visit the pond and take depth measurements at specific points throughout the bottom. These data points will help us determine how much and how fast the pond is filling up with sediment. It will take $5,700 to cover the costs of the field work, along with the data calculations and extrapolations as to when the Hatlem Pond may need dredging again in the future.
Also, Hatlem Pond dam will undergo repairs and improvements under the direction and supervision of Spicer Engineering, Inc. and updates of the completed work in this important area will be shared in the near future.
Finally, some shorelanders are reporting sediment build-up on the bottom of the shoals inside the “blue line.” This sediment build-up may be due to a few factors that are at this point, only speculation. It is unclear if the new, larger culvert on County Road 675 is playing a role in unimpeded sediment transport. Additionally, the winds, or lack thereof, are not “flushing” the sediment off the shoals in the early to late spring season and weak lake-wide currents are slowing down the process of sediment dispersal.
Thank you to everyone who’s reported Swimmer’s Itch cases online as well as Common Merganser brood sightings–we’ve been monitoring reports and taking action on getting the broods off the lake.
The summer of 2018 is proving to be a challenging year for Swimmer’s Itch control for these reasons:
Winter conditions into April delayed merganser broods coming on the lake by three weeks, therefore live trapping was delayed also. Normally, all live trapping is completed by the first week in July.
As trapping requires quiet conditions– no boat traffic, dogs in the water, people on docks/human activity around the trapping area–the weather related delay to trapping now makes for difficult conditions with more activity on the water.
This summer’s significant heat wave has resulted in an increase to the number of swimming hours on the lake.
Despite having relocated all 99 mergansers off the lake last year, we cannot eradicate Swimmer’s Itch, though it is at a reduced level. We continue to research what other life cycle(s) may be at work that have nothing to do with mergansers, though we still believe that the itch-causing parasite is largely cycling through Common Mergansers. This summer’s research will hopefully confirm this fact.
Lastly, a newly hatched merganser chick must be at least four weeks old before they can infect our snails with Swimmer’s Itch. Considering that, please know that seeing a brood on the lake for several days after reporting is not contributing to the itch problem.
Seven broods of mergansers were live trapped and moved off the lake; this represents 54 individual mergansers.
At least four more broods on Glen Lake need to be trapped and all effort will be made to relocate all the broods in the coming weeks.
Our goal is, and always has been, to live trap and relocate 100% of the merganser broods.
Finally, we resourced our trapping crew and equipment based on last year’s merganser brood count for three lakes – Glen, Lake Leelanau, and Lime. At the end of this year’s trapping season, we will evaluate the results. If the brood numbers are roughly the same as last year for all three lakes, we will continue our plan to share our resources as we are today.
How to Avoid the Itch
If possible, swim only in deep water and avoid swimming in the shallows.
Swim in the later hours of the day as opposed to swimming in the morning or early afternoon. Last year’s research on “time of day” revealed the itch can be at a high level in the morning.
Last year’s research revealed that Swimmer’s Itch is less intense in the later weeks of summer as opposed to the early weeks.
If you do get a case of Swimmer’s Itch, remember–it is not a dangerous disease and using a topical cream with cortisone will bring relief from itching.
What appears to be a harmless flower is actually an invasive species. These yellow iris are seen around the lake, as on Big Fisher Lake in this video with our watershed biologist, Rob Karner. He’ll advise how to remove and prevent the spread of this invasive species that will continue to colonize if we don’t take action to prevent it.
Please take a few minutes to watch this important video. Thank you for helping keep our lake pristine and growing with only native species.
Any questions can be directed to Rob through the GLA at 231-334-7645, or email him at email@example.com.
Aiming to help prevent the parasite carried by Merganser ducks that causes Swimmer’s Itch, GLA will soon be live trapping and relocating Common Merganser hens and their chicks.
You may see trapping teams setting up nets and working your shoreline to capture the ducks. If so, please assist the efforts by staying inside until the hen and her chicks have been captured. Usually, it takes about an hour or two to set up the nets, capture, and relocate the brood.
If you see broods, please do not harass them in any way, as it can increase the difficulty of catching them. (Note: It is illegal to shoot them except during hunting season).
Finally, if you observe a Common Merganserbroodon Glen Lake, please call in your sighting to 231-883-2776, noting the number of chicks and where you observed them. (There is no need to callif you see single mergansers without chicks or broods of other species such as mallards.)
Our goal will be to repeat last year’s effort of live trapping 100% of the Common Merganser broods. The trapping season begins now and will continue until early July.
According to our Watershed Biologist, Rob Karner, here are 10 quick things you can do in preparation for the summer season on Glen Lake:
1. Check your septic pumping schedule to see if you need to pump your tank (usually every 3-5 years or more frequently with heavy use).
2. Refrain from blowing leaves and debris into the lake as you clean up your yard. Compost leaves in the woods to return nutrients to the soil.
3. Prepare to gather all hazardous wastes for the spring collection date of June 30 at Glen Lake School (call 231.256.9812 ahead of collection day).
4. Prep your lake water irrigation system after the last frost for summer use, or set up a time to contact a contractor to install one.
5. Mix your compost piles that are away from the shoreline and add new compost.
6. Take shelled corn or other grains off your shopping list so you are not tempted to feed the ducks on your shoreline. By not feeding the waterfowl you’ll keep ducks, geese, and swans from gathering in concentrated groups where they will defecate, introducing harmful E. coli bacteria and excessive nutrients to the water.
7. Sign up for a Discovery Boat Cruise and find out more about GLA’s 2018 projects and initiatives, along with learning what makes Glen Lake and the Crystal River Watershed so special.
8. Take the online survey for the Michigan Shoreland Stewards Program at www.mishorelandstewards.org and become a Guardian. (Please be sure to register!)
9. Pick up all pet waste that accumulated over the winter and dispose in the trash.
10. If you fertilize in the spring, be sure to keep it at least 50 feet away from the shoreline and shop for phosphorous-free fertilizer. HJ Premium Turf Food provides essential nutrients lawns need to be vigorous, lush and green.
Thank you for your efforts in caring for Glen Lake
and the Crystal River Watershed!
The Glen Lake Association (GLA) Annual Meeting will be held on Saturday, August 11th, 2018 at the Glen Lake Community Reformed Church, 4902 W. MacFarlane Rd., Glen Arbor.
The meeting will begin at 10:00 a.m. with educational sessions, followed by the State of the Lake report and member recognition awards. Lunch will be provided for all attendees immediately following the meeting. Free tree seedlings will be available for all attendees too!
Educational topics will include:
Swimmer’s Itch update by GLA lake biologist, Rob Karner.
Overview of the Glen Lake Watershed Guardian Program and introduction of our new, on-staff Guardian Ambassador, Tricia Denton.
Opportunities for members to make an impact through GLA involvement.
Members will have the opportunity to vote for new board members who are filling vacancies for terms that have expired or those seeking a second term. A nominating committee has identified qualified members and made their recommendations for the available positions. The GLA appreciates your participation on this important matter.
Bring a friend or neighbor, particularly someone who has never attended the annual meeting.
Registration for GLA’s 2018 Discovery Boat cruises is now open to the public! Plan a memorable outing to enjoy a scenic, summertime cruise while also learning about the wonder of our freshwater lakes.
Schedule the date and time that works for you at this link to our GLA Event Calendar. It’s not too soon to plan on enjoying a Discovery Boat cruise with your friends and family – and they’ll thank you for it!
Join Glen Lake Association’s Watershed Biologist, Rob Karner, on a pontoon boat for a two hour scientific study of Glen Lake. Using various scientific equipment, students learn all about plankton, water chemistry, Swimmer’s Itch life cycle, hydrology, bottom sediments, aquatic succession, and aquatic plants.
Also learn about and see a plankton net, a compound microscope, Ekman Dredge, sonar devices, aqua view underwater camera, and the hydrolab.
Note:Children under 5 years not allowed. Children 5-10 years must be accompanied by a parent or guardian. If possible, please bring life jackets for children.
Download theliability release form here, which is required for all participants. Registration price is per person. Please add additional people in your group as “Guests” under the primary registration.
GLA reserves the right to cancel due to weather conditions. Please arrive 15 minutes prior to starting time.
We look forward to having you and sharing our love of Glen Lake! It’s going to be a great summer.