Water in a garden changes what unsupervised means. She may be a confident swimmer on holiday beaches and still be in serious trouble in a pool, where the sides are vertical, the waterline sits below the coping, and the only way out is a set of steps she has to find while tiring. A pond adds steep muddy banks, weed that tangles legs and, in winter, ice that looks solid and is not. The honest starting point is that supervision fails eventually: doors get left open, guests wander out, life happens. Barriers are what work during those failures.
The Fence Is the Protection
Enclose the pool with a fence she cannot climb, push through, dig beneath or open, and fit the gate so it swings shut and latches by itself from any partly open position. Test that latch weekly with an actual push-and-release check, and again after storms, ground work or any visit from children who may leave it propped. Keep furniture, planters and stored items away from both sides of the fence so nothing becomes a step up and over. Covers deserve a blunt warning: a soft cover can trap and hide a dog under folds that hold rainwater, and no cover turns water safe. If a cover exists, treat it as weather protection only and keep the fence as the real defence. For a pond, fence it on the same terms or fit a rigid grille just below the surface that will bear her weight; a large, deep pond in a dog's free-run area belongs behind a barrier, not behind good intentions.
Teach Her the Way Out
A barrier can fail once, so give her a second layer: knowing exactly where the exit is. With her on a lead at first and in calm conditions, guide her into the shallow end, let her feel the steps under her paws, and walk her out, repeating until she turns toward the steps by herself when she enters the water. Practise from different points along the pool so she learns to swim to the exit rather than to whatever edge faces her, where she would paw at a wall she cannot climb. For a pond with a gently shelving corner, mark that corner as the exit and practise there too. Keep sessions short, cheerful and ended while she is fresh; a tired dog learns slowly and panics faster. Never throw her in to test her, and never let games involve pushing or dunking near the edge.
Rules for People, Ice and Ordinary Days
Until the barrier has held across seasons and she reliably finds the exit, she does not go into the garden alone while either water feature stands reachable, full stop. Guests, children and dog-sitters hear the gate rule on arrival: the gate closes behind you, every time, and you never hold it open for her to follow you through. In winter, treat frozen pond ice as thin until proved otherwise, keep her on a lead near it, and never let her chase a ball or a bird onto a frozen surface; if she ever goes through ice, call emergency help rather than crawling out after her. After any swim, rinse pond water from her coat, check ears and paws, and watch her breathing and energy for the rest of the day. Keep a towel and a lead stationed at the gate so a wet dog coming back through is a routine event rather than a scramble, and dry her thoroughly before she settles, since a chilled, tired dog recovers more slowly. Family Sharing, reached through KinsLe from her profile, puts the latch checks, the exit-training stage and the winter rule in front of every helper.