New Braunfels Edition | September 2025

Environment

AMIRA VAN LEEUWEN

The Guadalupe-Blanco River Authority, or GBRA, is continuing its work on a multi- year, basin-wide conservation plan geared toward protecting six freshwater species. “We would be one of the rst river authorities to cover the entire river basin in our jurisdiction under a habitat conservation plan,” Nathan Pence, GBRA’s executive manager of environmental science, told Community Impact . A habitat conservation plan is a tool within the Endangered Species Act that describes impacts to endangered species and quanties the positive things to o set those impacts, also referred to as mitigation. “Any time you protect resources for habitat or water †ow for one species, you’re often helping an entire ecosystem,” Pence said. The freshwater species covered under the GBRA develops plan for habitat conservation

Digging deeper

is not sustainable because it is subject to lawsuit, or you could have changes made to your permit- ting,” he said. GBRA received two $1 million grants from the Department of the Interior through the U.S. Fish and Wildlife Service’s Section 6 Program for planning in 2019 and 2023. However, Pence said the overall cost of the plan will be determined by the amount of mitigation needed, and GBRA is still negotiating with the U.S. Fish and Wildlife Service. “What one person does upstream a“ects some- body else downstream ... so the more people that participate, the better it actually is for the river and the species,” he said.

Although GBRA diverts water and conducts activities through lawful permits received from the Texas Commission on Environmental Quality, there are still activities that the entity conducts that could impact endangered species. Pence said the process will take the authority’s water diversion permits and enter them under the habitat conservation plan so those species would be protected. It would also protect the authority from any endangered species litigation or endan- gered species challenges to its water permits. “If you are not in compliance with the environ- mental laws in Texas or from the federal govern- ment, then the water that’s being used and the resource that’s being used from a legal standpoint

Gillespie

Blanco

Travis

Lee

Bastrop

Hays

1

PLUM CREEK

BLANCO RIVER

Fayette

Real

Bandera

3

6

SAN MARCOS RIVER

plan include the following: • Eastern Black Rail (bird)

Colorado

2

3

• Whooping Crane (bird) • Guadalupe Darter (Žish) • False Spike (mussel) • Guadalupe Orb (mussel) • Guadalupe Fatmucket (mussel)

Bexar

Lavaca

GUADALUPE RIVER

Uvalde

Medina

Wilson

Jackson

Frio Species covered under the plan Guadalupe River Basin Federally endangered State threatened HCP area Zavala Atascosa

The authority is collaborating with other entities to develop the plan, including: • Kerr County • City of Gonzales • City of Kerrville • Canyon Regional Water Authority

Karnes

5

Goliad

Live Oak McMullen 6 Guadalupe Darter Fish: 4 Whooping Crane 5 Eastern Black Rail Bird:

1 Guadalupe Fatmucket 2 False Spike 3 Guadalupe Orb Mussels:

Bee

4

Refugio

Dimmit

La Salle

N

SOURCE: GUADALUPEBLANCO RIVER AUTHORITY COMMUNITY IMPACT

NOTE: THE MAP SHOWS WHERE SPECIES WITHIN THE PLAN ARE TYPICALLY FOUND.

Looking ahead

Pence said the ITP allows an entity to keep conducting its activities, but also indicates that the entity has taken endangered species impacts into consideration and is operating within the lawful bounds of the Endangered Species Act.

U.S. Fish and Wildlife Service, according to a July 30 habitat conservation plan public stakeholder meeting presentation. Following draft submittal, GBRA would need to apply and receive an Incidental Take Permit, or ITP, from the federal government.

The next public stakeholder meeting will be in spring 2026. The meeting will go over the mitigation eŒorts for the species identi‘ed in the plan, Pence said. O“cials hope to have a draft of the plan complete by summer 2026 to submit to the

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