Beach · Rockingham County · NH
Is JENNESS BEACH AT CABLE ROAD safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 19, 2026 · New Hampshire beach program (EPA BEACON)
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Get an alert the day a bacteria or algae advisory goes up.
What's in the water at JENNESS BEACH AT CABLE ROAD right now
As of July 19, 2026, JENNESS BEACH AT CABLE ROAD in Rockingham County, New Hampshire is clear to swim. Blue-green algae are not currently monitored at this water. No fecal-bacteria advisory is posted (state beach program). Rainfall over the past week totaled 0.4 in, which can wash bacteria and nutrients into the water.
Blue-green algae at JENNESS BEACH AT CABLE ROAD
JENNESS BEACH AT CABLE ROAD is a lake in Rockingham County, New Hampshire. Blue-green algae are not currently monitored at this water.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Frequently asked: swimming in JENNESS BEACH AT CABLE ROAD
- Is it safe to swim in JENNESS BEACH AT CABLE ROAD right now?
- JENNESS BEACH AT CABLE ROAD is clear to swim today. Blue-green algae are not currently monitored at this water. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does JENNESS BEACH AT CABLE ROAD have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at JENNESS BEACH AT CABLE ROAD. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in JENNESS BEACH AT CABLE ROAD?
- No bloom is detected at JENNESS BEACH AT CABLE ROAD today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How many New Hampshire lakes and beaches have swim advisories today?
- Today, 2 New Hampshire waters are under a swim advisory and 1 more warrant caution, out of 61 monitored waters SwimZone tracks in the state.
- How is JENNESS BEACH AT CABLE ROAD's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors JENNESS BEACH AT CABLE ROAD, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.