Butler helped create the Barton Springs-Edwards Aquifer groundwater management district, and the plan for the Balcones Canyonlands Preserve.
This species is threatened by the lowering water levels in the Edwards Aquifer, which feeds the springs in which it dwells.
John Edwards | Edwards Air Force Base | Carl Edwards | Blake Edwards | Duncan Edwards | Bernard Edwards | aquifer | Alistair Edwards | Kathleen Edwards | W. Edwards Deming | Robert Edwards | Paul Edwards | Owen Dudley Edwards | Jack Edwards | Edwin Edwards | Edwards, California | David Eugene Edwards | Barnaby Edwards | Anthony Edwards | Teddy Edwards | Richey Edwards | Ralph Edwards | Justin Edwards | Edwards | A. W. F. Edwards | Artesian aquifer | Terry Edwards | Ross Edwards | John Passmore Edwards | Jimmy Edwards |
However, several local environmentalist groups including the Save Our Springs Alliance (SOS) were strongly opposed to the development due to the subdivision's planned location over the recharge zone of the Edwards Aquifer.