Lake Jennings, operated by the Helix Water District, offers recreational paddling opportunities with some specific restrictions. The lake is open for boating Friday through Sunday from 6:00am to 5:00pm, with the entrance gate closing at 4:00pm. Single kayaks and two-person "Krystal Kanoes" (transparent canoes) are available for rent, with kayak rentals requiring a minimum 2-hour booking at $20 ($15 with military ID). Additional hours are $8 ($6 with military ID).

A 10 mph speed limit and no-wake zone extends 200 feet from swimming areas, docks, ramps, and the shoreline. The lake features multiple coves suitable for exploration, including Cloister Cove, Siesta Point, Hermit Cove, and Eagle Point. Two concrete boat ramps provide launch access.

Wildlife viewing opportunities are abundant, with over 60 bird species frequenting the lake, including loons, grebes, cormorants, herons, swans, geese, ducks, vultures, eagles, hawks, and falcons. The lake serves as a drinking water reservoir, which means no swimming is permitted and dogs are not allowed in the water or its tributaries.

Facilities include a bait and tackle shop, picnic areas with tables (some featuring barbecue grills), and restrooms. Day use fees include a $5 per adult (16+) entrance fee. All boats are subject to inspection for quagga mussels before launching.

The lake is stocked with fish seasonally - trout from November through April and catfish during summer months. Children may kayak only when accompanied by a parent or legal guardian who is also kayaking. All paddlers must sign a boat waiver prior to launching, available at the Bait and Tackle Shop.

For extended stays, the lake offers camping facilities with various hookup options and access to hiking trails, including a 5.5-mile relatively flat trail that meanders around the lake's back coves.