The six Willow Waterhole Greenway lakes provide flood control, wildlife habitats, opportunities for education, recreation, and conservation, and unexpected beauty in the middle of Houston.

At 10 acres, Scout Lake may be the smallest of Willow Waterhole’s six interconnected lakes, but it plays a crucial role in the park’s flood control and ecosystem. Excavated in 2003, Scout Lake is located just south of The Gathering Place on S. Willow Dr. and is the first lake to receive stormwater from Willow Waterhole Bayou during high-water events.

Water flows over the bayou’s weir into Scout Lake, where it is held before being routed through the basin’s network of lakes. From here, the stormwater continues to Triangle Lake and spreads out through the entire basin system, reducing the risk of flooding in nearby neighborhoods.

Beyond its functional role, Scout Lake is a serene spot for visitors to enjoy. You can take the short Bayou Trail from the nearby parking lot for a closer view of the concrete weir and experience the subtle beauty of this important natural and engineered water feature.

Spanning 18 acres, Heron Lake is one of Willow Waterhole’s most scenic and ecologically vibrant lakes. Completed in 2019 and renamed from "Dog Lake" in 2022 to reflect its popularity among birdwatchers, Heron Lake has become a hotspot for both wildlife and visitors. Nestled just northeast of The Gathering Place, this lake is directly connected to the Willow Waterhole Bayou through the basin’s second weir, playing a vital role in the park’s flood management system.

A recent trail extension now runs north of The Gathering Place, connecting Scout Lake to Heron Lake, making it easier for visitors to explore both lakes while enjoying the serene landscape. This enhancement offers a seamless path for walking, jogging, or birdwatching along the water’s edge.

During high-water events, floodwaters are channeled from Willow Waterhole Bayou into Heron Lake, helping to regulate water flow throughout the basin network. The lake’s strategic location and design help manage stormwater, preventing floods in surrounding neighborhoods while also supporting a diverse array of wetland habitats.

Heron Lake’s tranquil waters and lush surroundings make it a favorite destination for birdwatchers, who often spot a variety of species, including herons, egrets, and migratory birds. Whether you’re a nature enthusiast, birdwatcher, or just looking to relax by the water, Heron Lake offers a peaceful escape into the natural beauty of the greenway.

Located near the lake is the Native Prairie Garden, where visitors can explore a variety of indigenous plant species that support local wildlife. Additionally, one of the park’s two ancient live oak trees stands proudly near the lake, offering a glimpse into the area’s natural history.

Just east of Triangle Lake, visitors can enjoy the peaceful Arboretum Trail, a crushed-granite path that winds through a small wetlands area and features more than 100 native Texas plants and trees. The nearby Birding Center makes Triangle Lake a prime destination for birdwatchers and nature lovers alike.

Just east of Triangle Lake, visitors can enjoy the peaceful Arboretum Trail, a crushed-granite path that winds through a small wetlands area and features more than 100 native Texas plants and trees. The nearby Birding Center makes Triangle Lake a prime destination for birdwatchers and nature lovers alike.

The iconic Bob Schwartz Gazebo, nestled along the lake’s edge, hosts many of the Conservancy’s events, offering a perfect gathering space with panoramic views of the water, small islands, and scenic footbridges that crisscross the lake. Families can enjoy a stroll along the walkway surrounding the gazebo, taking in the breathtaking views and serene atmosphere.

The Naturescape Garden, located near the parking lot, features intricately carved tree trunks and overlooks the lake, providing an inviting space for children and families to explore. The area also boasts a cross-country racing trail and walking trail that circle the lake, offering plenty of opportunities for outdoor activities.

Adding to the charm, three large butterfly sculptures—“Flowers for a Lady”—were installed in 2013 by sculptor Rosalinda Toro to honor Kathleen Tinsley Ownby for her support of art installations across Houston. These vibrant sculptures add a creative touch to the natural beauty of the area.

Completed in 2015, Prairie Lake stands out as the only water compartment located east of S. Post Oak Rd., offering a stunning and uninterrupted view of its 73 acres of tranquil water and the surrounding native prairie preserve. At the lake’s southeast edge, where Gasmer Dr. dead-ends, visitors can take in the expansive beauty of the lake, which is framed by vibrant native plant life.

This lake is home to one of Texas' rarest natural treasures—the endangered Texas prairie dawn flower (Hymenoxys texana), which grows along the lake’s edge. The surrounding area is designated as a Prairie Management Area, preserved by the Harris County Flood Control District. Encompassing 15 acres, this protected zone supports over 300 coastal prairie species, with 244 species native to Texas, making it a vital area for biodiversity and conservation.

Although access to the Prairie Management Area is currently restricted, the future promises even more opportunities for visitors to explore and appreciate this unique ecosystem. Planned enhancements include trails, benches, a footbridge, scenic viewing areas with picnic tables, and an outdoor classroom, all designed to immerse visitors in the natural beauty of the area while providing educational experiences.

Prairie Lake not only serves as an important flood control reservoir but also as a thriving habitat for native plants and wildlife, preserving a crucial slice of the region’s natural heritage.