# Union Reservoir Nature Area > Large reservoir offers quiet lake ideal for paddle boarding and swimming with no motorized boats allowed. Picnic areas with charcoal grills and a huge playground create a relaxed, family-friendly vibe. Popular dog beach and ample parking support active outdoor days. Source: https://www.atly.com/location/UnionReservoirNatureArea - Address: 461 Co Rd 26, Longmont, Colorado, United States - Phone: +13037721265 - Website: http://www.longmontcolorado.gov/departments/departments-n-z/parks-open-space-and-trails/directory-of-parks-trails/union-reservoir-park ## What it is good for - Fun Activities — 10/10 - Relaxing Spot — 10/10 - Kid Friendly — 10/10 - Dog Friendly — 9.8/10 - Beach — 9.5/10 - Parks — 9/10 - Playground — 7.5/10 - Parking Available — 7/10 - Picnic — 6.4/10 ## What people say - "It's a great dog beach where your furry friend can run off leash." - "I had a fun day swimming and boating." - "The playground here is huge and near the swimming area." ## Good to know - There is a $10 fee to enter the area. - Parking is available and costs less than at Boulder Reservoir. - The dog beach area is wonderful and well-maintained. - Dogs are allowed off-leash in designated areas. - The bathrooms are clean and well-kept. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.