From CT DEEP:

CANDLEWOOD LAKE (lake levels, safety buoys). Due to the ongoing drought, the lake level is somewhat below typical late October levels and the launching of trailered boats (especially larger boats) is difficult at the Lattins Cove state launch. The Squantz Cove state launch remains fully functional. Also, remember that the Candlewood Lake authority has removed the hazard, navigation and speed buoys for the winter. Boaters, especially those unfamiliar with the lake should use extra caution out on the lake.

COLEBROOK RIVER LAKE (boat launch). Due to low water levels the boat launch at Colebrook River Lake remains closed. Boaters can call the U.S. Army Corps of Engineers (USACE) at 860-379-8234 for updated information.

QUADDICK LAKE (launch access). The state park gates were closed for the season to vehicular access on October 13, limiting access to the state park and state boat launch to walk-ins only.

WINTER DRAWDOWNS. In western CT: A deep (7-8 foot) drawdown of Highland Lake started in early October, and the state boat launch is now difficult to impossible for trailered boats to use. A 2-3 foot drawdown of West Hill Pond is ongoing. A drawdown of Lake Zoar was completed and the lake has refilled. Lake Lillinonah is currently drawn down with refill scheduled to begin on November 13, the launching of trailered boats from the Route 133 state boat launch will be very difficult and launching from the Pond Brook boat launch is likely not possible during this drawdown (refill should be complete late in the weekend).

In eastern CT: Drawdowns of Ashland Pond (3 feet), Bashan Lake (3 feet), Beseck Lake (3 feet), Billings Lake (3 feet), Gardner Lake (3 feet), Middle Bolton Lake (1.5 feet), Lower Bolton Lake (1.5 feet), Mashapaug Lake (1.5 feet) and Wyassup Lake (3 feet) are ongoing. A 3 foot drawdown of Hopeville Pond will begin November 15.

FISHING SEASONS. Anglers are reminded that the fishing season at several lakes and ponds scattered throughout the state closed November 1, most notably LAKE WONOSKOPOMUC, and SHENIPSIT RESERVOIR. Additionally, the fishing season at a number of areas including BUNNELLS POND (Beardsley Park), GREAT HOLLOW POND (Wolfe Park), LAKE MCDONOUGH, the MALTBY LAKES, LAKE SALTONSTALL, MOHEGAN PARK POND (Spaulding Pond, Norwich), and LAKE CHAMBERLAIN will close after November 30 and SAUGATUCK RESERVOIR will close after December 31st. (Please refer to the 2020 CT Angler’s Guide for complete regulations).

It also gives lake front owners an opportunity to repair walls and docks. The main reason at Candlewood is to kill the roots of inshore weeds. Grass carp don't like to feed in very shallow water so freezing in the winter or raking in the summer.

They found a half dozen zebra mussels on a dock that was pulled for the winter. It was in a CLA press release.