uses several techniques to successfully manage the lake. We contract
with Solitude Lake Management for
weed management services. Solitude evaluates the lake each spring
and assists us in determining the best course of action for optimum
weed control. We typically rely on three weed control processes.
First, a chemical weed treatment, if needed, occurs mid summer.
Second, a drawdown of anywhere between 0 - 4 feet that would normally
begin around October 1st. And finally, a refill, or closing of the
dam gate, in mid December to mid January. The Drawdown/Refill is
managed by the Todd Girard, Charlton Conservation Agent, GEIA Dam Monitor, Andy McMahon, and the town's Dam Monitor
for Glen Echo, Skip Bellerive. Depending on Solitude's study, we may
decide to proceed with some or all of these control measures. Schedules
are set out below.
Weed Bio Mass Study
Weed Biomass Study (November 2017)
Weed Treatment Schedule
2018 Weed Treatment
Weed treatment on: Wednesday, August 8, 2018
Weed treatment on: Tuesday, September 18, 2018
Weed treatment on:
No Fishing, Swimming, and Boating until: 9/19/18
No Livestock watering until: 9/19/18
No Drinking/Cooking until: 9/19/18
No Irrigation for 90 days or until: 9/19/18
PLEASE KEEP BOAT TRAFFIC TO A MINIMUM ON TREATMENT DAY. At the very least if you are out on the water, and see the fan boats, PLEASE STAY AWAY FROM THEM. Wave action can affect the concentration levels of the herbicide, thereby the effectiveness of the treatment.
Solitude - 2018 Year End Report
Water Test Results 9/21/18
Lycott's 2012 Summary Report
2013 Herbicide Management Summary Report
2014 Aquatic Vegetation Management Report for Glen Echo Lake
Aquatic Control Technology:
2015 Summary Report for Glen Echo Lake
Includes ACT's management activities during 2015 as well as broad management recommendations for 2016.
Solitude: 2016 Year-End Report
Solitude - 2017 Year End Report
Fanwort & Milfoil Notice
Fanwort & Milfoil spread due to fragmentation. DO NOT PULL, CHOP, RAKE, CUT, etc. either of these weeds as it will MAKE IT SPREAD AND MAKE THE INFESTATION WORSE.
If you don't know what either of these weeds look like, please look here:
Drawdown to begin October 15, 2018
The Conservation Commission has granted our request for a 4-foot drawdown for 2017. The drawdown will start on October 15th. The drawdown rate will be 1-2 inches per day until we have drawn down the lake four feet (at the spillway).
Please note that residents are allowed to perform general clean up and maintenance of their water front while the lake is down. HOWEVER, this work must be done by hand. If you have to perform work which requires equipment (other than you, a wheelbarrow, a shovel, etc), you MUST contact the Conservation Commission to file the proper paperwork and receive a DEP number.
Refill info: Refill will start after a hard freeze and upon notification from Solitude.
Here to review the Department of Fisheries and Wildlife Drawdown
at this time.
Order of Conditions
GEIA maintains a current Notice
of Intent (NOI) for the continuation of the drawdown and herbicide
treatment for weed control.
Dam Legislation (Charlton, MA)
This legislation passed. Read S. 2108 Legislation
Narrows Case Update
Department of Fisheries and Wildlife
Drawdown Performance Standard
Division of Fisheries and Wildlife
Drawdown Performance Standards for the Protection
of Fish and Wildlife Resources
Approved by the Fisheries and Wildlife Board on September
The Wetlands Protection Act requires that the Division
of Fisheries and Wildlife be notified of any proposed drawdown where
rare species habitat is involved. To identify areas of rare species
habitat, consult the most recent edition of the "Massachusetts Natural
Heritage Atlas" which contains maps of Estimated Habitats and Priority
Habitats of rare wildlife.
Drawdowns are commonly used as a technique to control
aquatic vegetation in many Massachusetts waterbodies. The Division
has statutory authority for regulating the take of these resources
under Massachusetts General Law Chapter 131 and Chapter 321 of the
Code of Massachusetts Regulations. Based on the Division of Fisheries
and Wildlife's knowledge and understanding of aquatic ecosystems,
the following performance standards were developed to protect fish
and wildlife resources when a lake drawdown is proposed.
For drawdowns exceeding 3 feet the Division of Fisheries
and Wildlife must be contacted directly for a site-specific review
of potential impacts to fish and wildlife resources. For drawdowns
of 3 feet or less, the proponent must either 1) contact the Division
of Fisheries and Wildlife for a site-specific review; or 2) meet
the performance standards below:
1. Drawdowns must commence after November 1st.
Drawdowns have been documented to be effective for
vegetation control in certain situations but still constitute an
artificial disturbance. Consequently, any drawdown should take place
for the minimum amount of time required to accomplish the lake-management
goal for which the drawdown is conducted. A November 1st start date
for the drawdown will allow the following conditions to be met:
- The pond can be drained at the appropriate rate.
- Sufficient time will be provided for the drawdown to be effective.
- The pond can be filled prior to the refill deadline.
Maintaining full pool elevation until this date will
also minimize the risk of in-lake and downstream fish kills caused
by temperature stress and low dissolved oxygen. Fish kills that
occur during the warm weather months are often caused by the interaction
between water temperature and oxygen depletion in shallow, heavily
vegetated lakes (Bennett, 1970). These lakes tend to have elevated
oxygen concentrations during the daytime while vegetation is photosynthesizing,
yet experience oxygen depletions at night while live plants are
respiring and large amounts of decaying organic matter create excessive
biological oxygen demand (Wetzel, 1975). Low dissolved oxygen situations
are common in numerous small, shallow lakes in Massachusetts. A
reduction of the surface water elevation under these conditions
could further exacerbate an already critical condition. Temperature-induced
fish kills can also be caused by the release of large volumes of
warm surface water into a coldwater fishery resource during summer
or early fall. One recent example occurred in Coal Mine Brook in
Worcester, resulting in a significant kill of brook trout.
Part of the Division's management responsibilities
is to provide recreational opportunities. Initiating the drawdown
after November 1st will minimize impacts on fall recreation by maintaining
public boat ramp access and other recreational opportunities. Anglers,
seeking to take advantage of stocked trout resources, or warmwater
fish species that become more active in the fall, will launch boats
or fish from shore. Low water levels can expose boat ramps and hinder
safe boat launching. Likewise, exposed mud flats or accumulated
dying vegetation can limit access to shore fishing.
2. The drawdown must be completed (reach its lowest
elevation) by December 1st.
Amphibians, reptiles and other aquatic organisms need
to be able to move to deeper water before ice formation and substrate
freezing. Completion by December 1st will also allow aquatic mammals
to locate alternate lodge sites and for beaver to relocate food
caches before ice formation.
3. Lake refill must be achieved by April 1st.
This refill date will ensure that the resource is
impacted for the shortest time period while still allowing the drawdown
to be effective. Establishing stable pool elevations by April 1st
will provide suitable spawning habitat for littoral spawning fish
species. Also, spring traditionally signals the beginning of the
fishing season for most Massachusetts anglers pursuing both cold
and warmwater fish species. Many ponds are also scheduled for trout
stocking in the early spring. For the same reasons previously described,
access to public boat ramps (for boats and stocking trucks) and
shoreline fishing must be maintained.
4. The drawdown rate must not exceed 4 cubic feet
per second per square mile of drainage area (cfsm), as measured
at the outlet structure, or must not exceed three inches of lake
elevation change per day, whichever results in the lower downstream
flow rate. Once the drawdown level has been achieved, lake outflow
must equal lake inflow. During the lake refill period, 0.5 cfsm
must be maintained at the outflow.
A major biological concern and priority for the Division
is protecting instream flows for fish and wildlife resources. Working
in conjunction with researchers at Cornell University, the Division
is utilizing the target fish community approach to assess stream
fisheries resources and establish restoration goals in flow-stressed
streams. An important component of restoration or maintenance of
any stream fish community is the establishment of seasonal stream
flow requirements. In the absence of site-specific stream flow data,
we utilize the United States Fish and Wildlife Service Aquatic Base
Flow (ABF) Policy to protect fish and wildlife resources.
The ABF Policy focuses on measuring the flows in healthy,
unregulated streams and rivers in New England to determine average
seasonal flows for the region. Seasonal recommendations, from typical
low summer flows to typical spring runoff (referred to as the natural
hydrograph) can then be applied during the appropriate time of year
in regulated resources or in instances where water withdrawal or
manipulation is proposed. The seasonal ABF recommendations are 0.5
cfsm in the summer, 1.0 cfsm in the fall/winter, and 4.0 cfsm in
Most drawdowns are conducted during the winter for
vegetation control. This creates flow rates that will be greater
than the winter ABF recommendation during pond drawdown and less
that the winter ABF recommendation during refill. The drawdown rates
listed above, although outside the value for the winter ABF recommendation,
will maintain stream flows within the range that would be expected
in the natural hydrograph.
Providing the flows listed in the performance criteria
will prevent the stream from going dry during pond refill, minimize
downstream erosion and prevent fish stranding in the pond.
Bennet, G. W. 1970. Management of lakes and ponds.
Van Nostrand ReinholdCompany, New York, NY.
Wetzel, R. G. 1975. Limnology. W. B. Saunders Company,