Leave No Trace at the Water: Protecting Lakes, Rivers, and Beaches

The lakes, rivers, and beaches that make a summer worth remembering are more fragile than they look. Water concentrates everything we bring to it — sunscreen, food waste, trampled banks, disturbed wildlife — and slow-flushing pools and lakes recover far more slowly than a flowing trail. The Leave No Trace ethic, usually associated with backcountry hiking, applies just as powerfully at the water's edge. Here's how to enjoy these places without using them up.

Plan ahead and know the rules

Good stewardship starts before you arrive. Learn the regulations for your destination — whether fires, dogs, or alcohol are allowed, whether there are sensitive nesting areas or seasonal closures, and where designated access points and facilities are. Visiting popular spots midweek or off-peak reduces crowding and the cumulative damage that concentrated use causes. Bring what you need to be self-sufficient, including a trash bag, so you're never tempted to leave something behind because you didn't pack a way to carry it out. Knowing the rules also keeps access open: closures and bans usually follow a pattern of misuse, and the easiest way to lose a beloved swimming hole is for visitors to trash it.

Protect the water itself

Water quality is the heart of the matter, and several common habits quietly degrade it. Sunscreen is a big one: chemical filters like oxybenzone and octinoxate wash off swimmers and harm coral, fish, and aquatic insects, so switch to mineral sunscreens with zinc oxide or titanium dioxide and apply them well before you get in. Never use soap, shampoo, or detergent in or near a lake or stream, even "biodegradable" kinds, which still need soil to break down; wash yourself and your dishes well away from the water and scatter the wastewater on land. Keep human waste at least two hundred feet from any water source, and use facilities where they exist. And resist feeding fish, ducks, or other wildlife, which fouls the water and harms the animals.

Respect wildlife and shorelines

Shorelines are among the busiest wildlife habitats anywhere — nurseries for fish, nesting grounds for birds, and feeding zones for countless species. Give animals room and observe from a distance rather than approaching, chasing, or trying to handle them. Keep dogs leashed where required and under control everywhere, since a loose dog can devastate a nesting beach in minutes. Be especially careful of posted nesting areas for shorebirds and turtles, which are easy to disturb without realizing it. Don't build rock dams or move large rocks in streams; the spaces between stones are home to the insects and juvenile fish that the whole aquatic food web depends on, and rearranging them does real damage for a fleeting bit of fun.

Pack it in, pack it out

The simplest principle is also the most important: everything you bring to the water leaves with you. That obviously means bottles, cans, wrappers, and packaging, but it also means the things people wrongly assume are fine to leave — fruit peels, nut shells, and food scraps, which take far longer to break down than expected, attract and sicken wildlife, and pile up at popular spots. Fishing line and hooks are especially lethal to birds and turtles, so collect every scrap, including line you find left by others. Cigarette butts are the single most common form of beach litter and leach toxins into the water; pack them out too. If you can, leave with more than you came with by picking up a few pieces of others' trash — it takes seconds and makes a visible difference.

Tread lightly and stop aquatic invaders

Where you walk and launch matters. Stick to established trails and access points rather than cutting new paths down banks, which causes the erosion that muddies water and destroys shoreline vegetation. Launch and land boats at durable spots to avoid trampling fragile plants. One increasingly important habit is preventing the spread of aquatic invasive species — organisms like zebra mussels and invasive plants that hitch rides between water bodies on boats, paddles, waders, and gear, and can wreck an ecosystem. The rule is to clean, drain, and dry everything that touches the water before moving to a new lake or river: remove visible mud and plants, drain all water, and let gear dry fully. It's a small ritual that protects entire watersheds.

The payoff of stewardship

None of this requires sacrifice so much as attention. Mineral sunscreen, a trash bag, a little distance from wildlife, and a habit of cleaning your gear cost almost nothing and add up to enormous protection when thousands of visitors adopt them. The reward is tangible and self-interested as well as ethical: clean water you can actually swim in, shorelines that aren't fenced off after being loved to death, and wild places that look in ten years the way they look today. We protect what we enjoy, and at the water's edge, enjoying it responsibly is the whole job.