Mahalo
Houston, TX

EXPLORATION GREEN CONSERVANCY

EIN 46-4607075
Environment & Animal Welfare Environmental Education & Advocacy
Mission

To create, maintain, and operate Exploration Green’s natural habitats and recreation facilities, support the use of the area for stormwater management, and provide environmental education and outdoor learning opportunities for current and future members of the Clear Lake community.

IRS-recognized 501(c)(3) public charity Contributions are tax-deductible

About EXPLORATION GREEN CONSERVANCY

Exploration Green Conservancy is a volunteer-driven 501(c)(3) based in Southeast Houston that stewards Exploration Green, a 200‑acre urban green space combining permanent stormwater detention, wetlands, wildlife habitat and recreation. The Green includes roughly 40 acres of wetlands and multiple permanent detention lakes and is home to more than 1,000 native species. The Conservancy operates as a public‑private partner with the Clear Lake City Water Authority and other regional partners to deliver nature-based flood mitigation, habitat restoration, accessible trails and environmental education. Construction of the final phase of the detention lakes was completed in fall 2023; the Conservancy continues habitat plantings, volunteer programs and development of visitor amenities (tree plantings and site enhancements are ongoing into 2025–2026). The organization focuses on conservation, restoration, community engagement and hands‑on learning through volunteer workdays, guided hikes, youth programs and public events that activate the Green as both a working stormwater facility and a living classroom.

Notable achievements

Final Phase Completed (Fall 2023)

Construction of the Green’s final detention-lake phase was finished in fall 2023, completing the multi‑phase project that provides large-scale natural stormwater detention and community recreation.

Large-Scale Nature-Based Flood Mitigation

The project repurposed a former golf course into a 200‑acre integrated landscape with multiple permanent lakes and wetlands capable of significant stormwater detention (hundreds of millions of gallons), while providing public trails and habitat.

Habitat Restoration & Community Stewardship

Ongoing native-planting, restoration and volunteer programs have established and protected habitat supporting over 1,000 native species and built active community stewardship through recurring events and education opportunities.

At a glance

Total assets
$411K
Annual revenue
$148K
Tax status
501(c)(3)Public charity
EIN
46-4607075
Location
Houston, TX
On Mahalo since
May 2026

Financial figures from the IRS Business Master File, the IRS’s registry of tax-exempt organizations.

Recognition

Houston‑Galveston Area Council (H‑GAC) Water Innovation Strategies of Excellence (WISE) Award — 2024.
Engineering News‑Record (ENR) Texas & Louisiana — 2024 Regional Best Project Award (Exploration Green Detention Facility).
Space City Rotary — LEAP for Mankind Business Award presented to Exploration Green Conservancy — 2023.

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