PLIA Annual Meeting at the State Park Pavilion, Record Attendance

In case you missed the PLIA Annual Meeting, here is a recap.

The early rain and chilly temperatures did not deter folks from turning out for the PLIA’s Annual Meeting on June 14, 2025. In fact, with over 127 people at the State Park Pavilion, it was the highest recorded attendance ever! Nottingham Select Board members Charlotte Fyfe and John Decker were present, as was State Representative Scott Pryor. President Tom Duffy acknowledged Park Manager Dave Richardson’s generosity in donating the use of the Pavilion for our Annual Meeting.

There were three raffles to be given away at the meeting, and plenty of raffle tickets available for the Paddle Poker event scheduled for June 28, 2025. Registering for Paddle Poker was easy, and Pawtuckaway playing cards were on sale as well.

 

 

Members voted to elect a slate of nominees to the PLIA Board of Directors, and to change the organization’s fiscal year from June 1 – May 31 to January 1 – December 31. Tom Duffy explained that this amendment to the Bylaws would avoid a lot of confusion, since membership is also on a calendar year.

Government Liaison Tom Duffy looked back to our success getting approval of the Warrant Article authorizing the Town to apply for a $100,000 grant for the PLIA’s watershed study, and forward to hearing whether we have been awarded the funds.

Steve Soreff, Co-Chair of the Weed Watcher program, congratulated Karen Given and Linda St. Pierre on collecting and disposing of 2,000 Chinese mystery snails last summer! He urged everyone to be on the lookout for weeds and snails, inviting attendees to take home telescoping nets at the conclusion of the meeting to keep in their kayaks for capturing Chinese mystery snails.

Gary Potavin pointed out the snail collecting buckets donated by his daughter Sonoma that were placed on tables for people to take home with them as well. Tom Duffy announced that Sonoma had raised over $400 from the sales of bucket camp seats she had made and was donating all of it to the PLIA. He added that we need more supporters like her.

Bruce Henden called for more volunteers for the Lake Host Program, to keep invasive species from going into or out of the lake. Tom Duffy emphasized how easy Lake Hosting can be, and offered to team up with any newcomers wanting to learn the ropes. Bruce encouraged everyone to practice the clean, drain, and dry system of boat care, and to urge friends and neighbors with boats to do the same when using private boat ramps.

Other reports from Program Chairs included a plea by Milfoil Team Coordinator Neil Santos for more search snorkelers and divers. Milfoil sightings are way down but not eliminated from the lake. Certified Weed Control Diver Jamie Burleigh cautioned members not to let their guard down, because we would like to avoid using herbicide again if it can be avoided. He was pleased to announce a new D.A.S.H. boat that would be available for use on the lake, and hopes to get the Boy Scouts involved in searches again this summer.

The next Road Clean Up event will take place on July 12, 2025, at 9:00 AM. Water testing has been conducted on Pawtuckaway since the 1980’s, to monitor water quality and phosphorus levels. Tom mentioned that he is hoping to prevent phosphorus from entering the north end of the lake with holding ponds someday.

Brooke Schaefer revealed that a new fundraiser is being planned, called Pawtuckaway Games, loosely based on the Amazing Race. Teams of two will engage in timed events on five abutting properties. It is scheduled for September 13, 2025. Stay tuned!

 

Tom Duffy declared Therese Thompson the winner of the 2024 Local Hero Award. Therese is a long-time supporter of the PLIA, starting back decades ago when she would rise before dawn to volunteer her services as boat inspector when fishing tournaments were scheduled at the Fundy. She and Tom traveled together for meetings with NH DES when our relationship with that agency was in its infancy. She created a booklet for identifying invasive aquatic species and conducted many trainings of Weed Watchers. Therese served on the Board of Directors of the PLIA and even though she has moved from the lake, she remains active in assisting the Board with grant writing and keeping them informed of events and activities of importance within the Lamprey River watershed.

Corey Clark, Chief Engineer of the NH DES Dam Bureau, presented a slide show and spoke about the history of the four dams on Pawtuckaway, starting with their creation around 1800 to supply power to Newmarket Manufacturing. He reviewed studies and repairs that had been conducted over many years, explaining that Drowns and Dolloff Dams are now considered “high hazard” because of the potential catastrophic effects of dam failure and flooding. This also means that their safe condition is a high priority for the State. A copy of Corey’s presentation can be found here.

Because of their age and deteriorating structures, Pawtuckaway dams are slated for major repairs as soon as funding can be approved and allocated. He projected that construction could happen as soon as 2028 – 2029. In response to questions from the audience, Corey stated that the lake would be lowered 20 feet in the fall, and work would begin as early as possible the following spring, with construction concluding that fall. Filling up the lake starting that winter might be a challenge, but weather events would dictate how quickly that happens.

Tom Duffy concluded the meeting and awarded prizes to the three raffle winners. All in all, a very good meeting!

NH Passes Law to Increase Fines for Shoreland Protection Violations

Senate Bill 299 (SB 299) was signed by Governor Kelly Ayotte on June 10, 2025. This new law strengthens enforcement of the Shoreland Water Quality Protection Act by establishing penalties for contractors who supervise or perform work in violation of the law.

By introducing clear enforcement tools, this law aims to deter contractors from knowingly violating shoreland regulations or ignoring permit requirements. It provides added accountability, helping to protect the health of New Hampshire’s lakes and shielding property owners from inadvertently hiring contractors with a history of noncompliance.

Specifically, the law allows for fines up to $5,000 for contractors for the first offense and doubles the fines for subsequent violations.

The law will take effect on January 1, 2026.

Cyanobacteria Warning for Pawtuckaway Lake Removed on June 6

The cyanobacteria warning at your lake has been removed, please see below for details.

 

Waterbody Pawtuckaway Lake, Nottingham
Status Warning REMOVED
Issued 5/28/2025
Removed 6/6/2025
Notes Samples were collected around the waterbody (including the State Park beach, town beach, and near the dam) on 6/5/2025. The cyanobacteria density ranged from 400 – 11,400 cells/mL, which is below our recreational threshold of 70,000 cells/mL. All samples were mixed heavily with pollen. As a reminder, it is best practice to avoid recreating in any surface scum as there is potential for cyanobacteria to be mixed in.
 

 

Please visit the Healthy Swimming Mapper for the most current information about bloom location, status, and severity .

 

Cyanobacteria reports depict only what an observer sees in the water. The report may reflect a waterbody wide perspective if they boated around the waterbody and made observations, or it could be a single sighting from the shoreline. One sighting does not indicate that a watch or warning is necessary, but it does indicate that those on or around the waterbody should be aware that cyanobacteria have been observed beyond what is natural, and that they should be on the lookout for shifting bloom conditions and report them via the Bloom Report Form

 

Watches are issued when samples are evaluated and cyanobacteria are in higher abundance than normal background levels at multiple locations, but that densities are below 70,000 cells/mL or when clear photographic evidence indicates a bloom is occurring.

 

Warnings are issued when samples are evaluated microscopically, and cell counts exceed 70,000 cells/mL and the bloom is widespread or extends to multiple locations on the waterbody. A warning does not close the waterbody to recreational use. The warning is intended as a precautionary measure to inform the public of the potential health risks associated with cyanobacteria blooms. Please see our updated FAQs for more information.

 

NHDES advises lake users to not swim in or near the vicinity of where bloom material is visible. Please also keep pets and livestock out of areas where bloom material is observed. It is suggested that local authorities post the 2025 cyanobacteria sign at public access points while a warning is in place to alert the public of current conditions.

Cyanobacteria Warning, May 28, 2025

A cyanobacteria bloom has been observed at your lake, please see below for details.

Waterbody Pawtuckaway, Nottingham
Status REPORT
Issued 5/28/2025
Bloom Description (photos attached) Green surface accumulations along the shoreline
Cyanobacteria Taxa Dolichospermum
Cyanobacteria Density (cells/mL) Near Dolloff Dam: Too Numerous to Count (TNTC)

Beach Road Beach: 470,000

Notes Bloom conditions were first observed on

5/27 near the Dolloff Dam. Samples collected on 5/28 exceeded the recreational threshold at both Dolloff Dam and Beach Road Beach.

 

Please report through the Bloom Report Form if you continue to see bloom conditions.

 

 

Please visit the Healthy Swimming Mapper for the most current information about bloom location, status, and severity .

 

Cyanobacteria reports depict only what an observer sees in the water.  The report may reflect a waterbody wide perspective if they boated around the waterbody and made observations, or it could be a single sighting from the shoreline.  One sighting does not indicate that a watch or warning is necessary, but it does indicate that those on or around the waterbody should be aware that cyanobacteria have been observed beyond what is natural, and that they should be on the lookout for shifting bloom conditions and report them via the Bloom Report Form

 

Watches are issued when samples are evaluated and cyanobacteria are in higher abundance than normal background levels at multiple locations, but that densities are below 70,000 cells/mL or when clear photographic evidence indicates a bloom is occurring.

 

Warnings are issued when samples are evaluated microscopically, and cell counts exceed 70,000 cells/mL and the bloom is widespread or extends to multiple locations on the waterbody. A warning does not close the waterbody to recreational use. The warning is intended as a precautionary measure to inform the public of the potential health risks associated with cyanobacteria blooms.  Please see our newly updated FAQs for more information.

 

NHDES advises lake users to not swim in or near the vicinity of where bloom material is visible. Please also keep pets and livestock out of areas where bloom material is observed. It is suggested that local authorities post the 2025 cyanobacteria sign at public access points while a warning is in place to alert the public of current conditions.

 

Dam Status Update May 19, 2025

Corey Clark, P.E., Chief Engineer at the Dam Bureau, NH DES, has this update on the situation at Dolloff Dam:

“The good news is that Pawtuckaway Lake is now full. The sinkhole at Dolloff Dam has not increased in size since it was first observed this spring and leakage through the dam has stabilized at the full lake elevation. However, we are still physically monitoring the site twice a week and several sensors are still providing real time data on the rate of leakage and the water level in several monitoring wells. We are still concerned that sediment is being transported with the leakage resulting in the continued loss of embankment material from the dam. While the volume of sediment is very low, it still needs to be monitored for changes or increases and ultimately needs to be remediated.

Diving is scheduled to take place at the dam next week and we are currently working with our engineering consultant to schedule additional test borings at the dam. It is likely that these borings will take place later this summer and will allow us to better understand why the sink hole has developed and what can be done to remedy the situation. It is likely that any remedy will be temporary, and a much larger future rehabilitation of the dam will need to occur to mitigate this and other dam safety issues.

Additionally, the removal of Burnhams Marsh Dike has been completed and the site of the former dam has now been restored to what we believe was the condition of the site prior to the installation of the dam.

While I hope you find this email as good news, if we observe that the sinkhole is increasing in size or if the structural stability of the dam is questioned, then we will again start lowering the elevation of Pawtuckaway Lake to reduce the risk of an emergency situation from developing. Should that need arise I will notify everyone on this email as soon as possible.

I will discuss the status of things when I speak at the Annual Pawtuckaway Lake Improvement Association Meeting on June 14th at 9:30am at the Pawtuckaway State Park Pavilion. Hope to see you there.”

 

Work on removing Burham’s Dam/Dike Almost Completed, May 6, 2025

Corey Clark, Chief Engineer at the NH DES Dam Bureau, has this update on Pawtuckaway Lake levels:

Unfortunately, the Burnhams Dike removal project will not be wrapped up until Thursday of this week. Until that time we will need to maintain Pawtuckaway Lake 1-2 feet lower than normal in order for the work to occur and will be discharging out of Drowns to keep the level down. As soon as we wrap up the removal project later this week, we will shut down flow from Dolloff and Drowns to store any runoff into the lake.

Past and Current Editions of PawPrints are now Online

Read the current and past issues of PawPrints here.  The oldest issue that is currently available is from 1992 although there is a big gap from 1992 to 2005 that would be nice to fill.  If anyone has issues that are not currently on the website we would  love to add them! Just send an email to Info@PawtuckawayLake.com or contact Pam Kelly or Neil Santos.

Dolloff Dam/Burnhams Dike Update

This report comes from NH DES, where the Dam Bureau has been busy working on dams and dikes in Pawtuckaway:

The removal of Burnham’s Dike is serving an important role in helping to keep the organic matter present in Burnhams Marsh from washing into Fundy Cove, were the dam/dike to have failed. This effort will help protect water quality within Fundy Cove and, therefore, the rest of Pawtuckaway Lake.*

While the low lake level at present is an inconvenience to anglers who wish to cast their lines in the shallow areas of the lake, the delay in raising the lake to normal summer level should ultimately be of long-term environmental benefit for all stakeholders.

Removal at the Burnhams Marsh Dike/Dam is proceeding smoothly. The removal effort is anticipated to finish up by the end of this week. That same crew has some work to perform on a couple of other dams within the State Park next week, but they should be out of there after that.

At Drowns Dam, the gate is open a few inches to allow the required minimum flow for the stream, but the lake level is still 1.5-2 ft below the spillway elevation associated with normal summer lake level.

At Dolloff, the lake is holding steady at the level of the stop logs and spilling over to provide the minimum required discharge as well. Once the crew has finished with their work within the State Park next week, the plan is to continue bringing the lake up to normal summer level. This will involve adding more stop logs at Dolloff. NHDES continues to monitor the Dolloff Dam and the sinkhole on the crest to ensure the dam remains safe as the water levels rise. As Corey Clark previously shared, if conditions at Dolloff Dam change in such a way as to generate concern, then it may prove necessary to lower the lake level back down to reduce the loading on the dam.

* And moving water out through Drowns Dam is another way to get rid of the nutrient-rich effluent leaving Burnhams Marsh – Ed.

 

Dolloff Dam Update April 10, 2025

Corey Clark, Chief Engineer of the Dam Bureau, NH DES, has this report:

We have an update on the situation at Dolloff Dam.  Since my last message we have completed the following tasks:

  • Lowered the water level to 5.1 feet below the summer elevation of 250.4 feet.
  • Taken survey measurements of the sinkhole and all downstream leakage.
  • Instrumented two downstream weirs that measure leakage for around the clock measurements.
  • Instrumented the piezometers (aka monitoring wells) within the dam to measure water levels around the clock.
  • Cleaned and patched voids in concrete joints at the interface of the upstream concrete wall and upstream concrete buttresses.
  • Instituted bi-weekly site visits by dam safety engineers.
  • Started refilling the impoundment.

As for my last bullet, those of you on Pawtuckaway Lake have likely observed the level of the lake increase over the past few days. While we still don’t have all the answers regarding why the sinkhole developed or if the sinkhole should just be monitored or repaired, we are cautiously trying to capture the recent rain events to fill the lake. As you can see in the graph below, we are now just above the elevation in which we first observed the sinkhole and started lowering the lake. We are continuing to visit the site regularly to see if any changes are observed as we increase the water elevation. However, if we observe that the sinkhole is increasing in size or if the structural stability of the dam is questioned then we will again start lowering the elevation of Pawtuckaway Lake to reduce the risk of an emergency situation from developing.

Moving forward the Dam Bureau will be performing the following:

  • Continue monitoring the dam with bi-weekly site visits.
  • Continue monitoring data from weirs and piezometers.
  • Continue working with our engineering consultant to evaluate the sinkhole and leakage data to determine if the sinkhole should be monitored or repaired.
  • Dive inspection of the upstream side of the dam to evaluate potential areas of water intrusion. This could take place as early as next week.
  • Drilling in the dam to develop temporary and long-term solutions to the ongoing leakage and sinkhole development issue. This will take place this summer and will likely need to be done via a barge.
  • Continue adding stoplogs at Dolloff Dam to increase the elevation of Pawtuckaway Lake.

As previously stated, the last bullet is contingent on making sure that the dam is performing as expected and there is no increased threat to downstream individuals. In the attached plot you can see that we still have 3.5 feet of pond increase until we reach the summer elevation.

Additionally, we ask that you and members of the public refrain from exploring the dam by foot or by water. We are more than happy to answer any questions, but we want to make sure that nobody gets injured while exploring the site.