Filing deadline: April 30. Build your Tom Green County plan today.
Rolling Plains Ecoregion
Wildlife Management Plan for Tom Green County, Texas
Tom Green County sits at the convergence of 5 Texas ecoregions, with 64 documented wildlife species.
Intelligence Snapshot
Regulatory Complexity
Tom Green County's conservation obligations require careful attention to how management practices affect listed species habitat. Critical habitat has been designated for 3 species within county boundaries. Federal review may be triggered by land use changes in designated areas. The county spans 5 ecoregions. A plan written for the wrong landscape position could prescribe inappropriate intensity standards or target the wrong species assemblage. A properly calibrated plan accounts for these constraints. A generic plan does not.
Tom Green County Ecological Profile
Tom Green County's 1,522 square miles contain 12,588 documented oil and gas wells alongside mesquite-grassland mosaics and eroded canyons, creating a landscape where industrial infrastructure and ecological management coexist at close range. The region receives 20 to 30 inches of rainfall annually, enough to support productive rangeland but not enough to forgive overgrazing. San Angelo State Park provides a nucleus of protected habitat and a reference landscape for private land management in the surrounding area.
Brush management on the Rolling Plains is a balancing act between reducing mesquite canopy cover to restore grass production and retaining enough woody structure to provide wildlife cover. The standard approach combines aerial herbicide application on dense mesquite flats with mechanical treatment of regrowth, followed by prescribed fire to maintain the treated areas. Strip-pattern treatment, alternating cleared and untreated bands, creates the habitat mosaic that bobwhite quail populations require: open grassland for foraging and nesting within short flight distance of woody escape cover. Prickly pear management is increasingly important as cactus density has increased under decades of overgrazing and fire suppression. Half-cutting or targeted herbicide application reduces prickly pear while maintaining some plants for the moisture and fruit they provide to wildlife during drought.
Transitional Ecoregion
Tom Green County intersects 5 distinct ecoregions: Central Great Plains, Chihuahuan Deserts, Edwards Plateau, High Plains, and Southwestern Tablelands. This is not a minor detail. A plan calibrated to the Central Great Plains would prescribe the wrong intensity standards, the wrong target species, and the wrong management timeline for a property in the Southwestern Tablelands zone. Property-specific ecoregion classification is the first step in any credible plan.
Soil Conditions
Soils are diverse, ranging from deep red sandy loams of the Miles and Springer series on uplands to heavy Stamford and Rowena clays in bottomlands, with shallow, rocky Rough Break soils along canyon escarpments.
Fire Ecology
Fire historically burned the Rolling Plains at 3 to 7 year intervals, maintaining open grasslands and limiting mesquite and cactus density. Prescribed fire is critical for post-treatment maintenance of brush-managed areas and for stimulating native forbs that provide quail food.
Spans 5 ecoregions: Central Great Plains, Chihuahuan Deserts, Edwards Plateau, High Plains, Southwestern Tablelands
Northern bobwhite quail is the primary management target on Rolling Plains ranches, and the region supports some of the most productive wild quail populations remaining in the United States. Scaled quail occupy the drier, more open western portions. Texas horned lizard is a species of high conservation concern that has declined across much of its range due to red imported fire ant invasion and loss of harvester ant prey. Lesser prairie chicken occurs in the sandy, shinnery oak rangelands of the western Rolling Plains. Raptor diversity is high, with golden eagle, ferruginous hawk, and Mississippi kite all nesting in the region.
Tom Green County Species of Conservation Concern
TPWD records 64 species in Tom Green County. Birds represent the most documented group at 27 species. The county carries significant conservation obligations: 2 federally endangered species, 2 federally threatened, and USFWS critical habitat designations for 3 species. Management activities on private land must be designed to avoid incidental take. Federally listed species include Texas fatmucket and Texas pimpleback. Texas fatmucket: Freshwater mussel endemic to central Texas rivers.
Primary Management Targets
bobwhite quail, lesser prairie-chicken, white-tailed deer
Listed Species
Freshwater mussel endemic to central Texas rivers. Sedimentation from land clearing, impoundment, and water quality degradation are primary threats. Riparian buffers and erosion control benefit this species.
Freshwater mussel in central Texas rivers. Threats include impoundment, water quality degradation, and altered flow regimes. Riparian management and erosion control are beneficial.
Western distinct population segment is threatened. Requires large patches of mature riparian woodland (cottonwood, willow) with dense understory. Clearing riparian corridors wider than 300 feet may trigger consultation in designated critical habitat.
Freshwater mussel found in central and East Texas rivers. Sensitive to sedimentation, flow alteration, and water quality changes. Maintaining riparian vegetation and minimizing erosion are key management practices.
Nests on bare sand and gravel bars along rivers and reservoirs. Disturbance during nesting season (May through August) must be avoided. Water level management at reservoirs affects nesting success.
Freshwater mussel endemic to central Texas rivers. Sedimentation from land clearing, impoundment, and water quality degradation are primary threats. Riparian buffers and erosion control benefit this species.
Freshwater mussel found in central and East Texas rivers. Sensitive to sedimentation, flow alteration, and water quality changes. Maintaining riparian vegetation and minimizing erosion are key management practices.
Freshwater mussel in central Texas rivers. Threats include impoundment, water quality degradation, and altered flow regimes. Riparian management and erosion control are beneficial.
Depends on harvester ant colonies for food. Fire ant suppression and native grassland restoration directly benefit this species. Listed as state threatened.
Source: Texas Parks & Wildlife Department RTEST Database; U.S. Fish & Wildlife Service Critical Habitat Designations
Rolling Plains Wildlife Management Standards
In Tom Green County, the management balance is mesquite canopy reduction for grass production against retaining enough woody cover for quail escape habitat. Strip pattern treatment is the standard approach. Because the county spans 5 ecoregions, the applicable intensity standards depend on where the property sits. For the Rolling Plains portion, TPWD requires 20 to 30 minimum acres, 15% brush management, and annual census documentation (34 TAC Section 9.2002). Primary targets are bobwhite quail, lesser prairie-chicken, and white-tailed deer. Management prescriptions emphasize maintaining large, connected tracts of native rangeland with minimal fencing.
These are the intensity thresholds your plan must meet for the Rolling Plains ecoregion. Your county appraisal district will verify compliance against these minimums. A plan that does not address them risks denial of your wildlife management valuation. For a complete overview of the seven management pillars, see the management pillars guide.
In Tom Green County, brush management targets mesquite canopy reduction while retaining enough woody cover for wildlife escape habitat.
Food plots must provide nutritional supplementation for target species. The minimum size and density are set by ecoregion to reflect carrying capacity.
Feeder placement and protein content are auditable. The aflatoxin threshold (20 ppb) is a compliance requirement, not a suggestion.
Fire ant suppression directly supports native harvester ant populations, the primary food source for Texas horned lizard and other ground-foraging species.
Brown-headed cowbirds are brood parasites that reduce nesting success of songbirds. The minimum applies to properties where cowbird trapping is selected as a management activity.
The burn rotation percentage applies over the full plan period. Properties that cannot burn due to WUI constraints must document the limitation and substitute equivalent mechanical treatment.
Nest box density is based on territory size of target cavity-nesting species. Boxes must be monitored and maintained annually.
Source: TPWD 34 TAC Section 9.2002, Comprehensive Wildlife Management Planning Guidelines
Water Resources
9 Groundwater Conservation Districts regulate water resources in Tom Green County, creating a dense permitting landscape for new wells and production limits that directly affect wildlife management water sources.
Conservation Infrastructure
San Angelo State Park provides protected Rolling Plains habitat and serves as a reference landscape for private land management in the county.
Infrastructure
Tom Green County has substantial oil and gas infrastructure: 12,588 documented wells across 23 categories and 3,607 pipeline segments recorded by the Railroad Commission. 10 orphan wells are on the Railroad Commission's plugging priority list.
5 ecoregions. 2 endangered species. Tom Green County's complexity is the plan's first constraint.
Build your Tom Green County wildlife management plan.
5 ecoregions. 64 documented species. Tom Green County's ecological complexity means the plan has to be specific to your property's landscape position. Calibrated to Rolling Plains standards.
Build Your Plan