Community volunteers working together on watershed restoration

Discover Your Bioregion

Explore US bioregions prioritized by restoration urgency, biodiversity significance, and "Trimtab" potential for systemic change

Priority Bioregions

Colorado River Basin
9.4
40+ million people including Phoenix, Las Vegas, Los Angeles, and Denver

Systemic overallocation with demand far exceeding supply. The 'Law of the River' is obsolete.

Degradation: 10/10
Biodiversity: 8/10
Trimtab: 9/10
Population: 10/10
Trimtab Intervention

Modernize water law and incentivize agricultural efficiency. Agriculture uses ~80% of the water.

Water policy reformAgricultural efficiency improvementsRiparian zone restorationExperimental flood flows
California Floristic Province
9.0
Over 25 million people in California coastal metros

Global biodiversity hotspot with Mediterranean climate. High endemism including Giant Sequoia.

Degradation: 9/10
Biodiversity: 10/10
Trimtab: 7/10
Population: 10/10
Trimtab Intervention

Integrative fire and water management. Strategic forest thinning and natural water capture systems.

Prescribed fire programsForest thinningMeadow and wetland restorationWatershed protection
Everglades (Florida)
8.2
9+ million people in South Florida including Miami

The 'River of Grass' - a vast, slow-moving sheet of water that has been drained and altered.

Degradation: 9/10
Biodiversity: 9/10
Trimtab: 7/10
Population: 8/10
Trimtab Intervention

Comprehensive flow restoration. Continue Kissimmee River restoration and build water storage.

Flow restorationWater storage projectsReduce toxic algae bloomsProtect estuaries
Longleaf Pine Savanna (Southeast)
8.2
Growing cities like Atlanta, Birmingham, Mobile

Fire-adapted ecosystem with >97% lost to logging and fire suppression. Home to Red-cockaded Woodpecker.

Degradation: 9/10
Biodiversity: 8/10
Trimtab: 9/10
Population: 7/10
Trimtab Intervention

Reintroduction of prescribed fire. Overcoming social and regulatory barriers to controlled burning.

Prescribed fire programsKeystone species restorationFire ecology educationCommunity engagement
Columbia River Basin
7.7
Major cities: Portland, Seattle, Spokane

Greatest salmon-producing river system. Dams block migration and alter thermodynamics.

Degradation: 8/10
Biodiversity: 8/10
Trimtab: 8/10
Population: 7/10
Trimtab Intervention

Strategic dam removal and modification. Fish passage technology and turbine upgrades.

Dam removalFish passage improvementsSalmon run restorationRiparian forest recovery
Appalachian Forests
7.8
Eastern Seaboard cities including New York, Washington D.C., Atlanta

One of the most biodiverse temperate broadleaf forests. Water towers for the Eastern Seaboard.

Degradation: 7/10
Biodiversity: 9/10
Trimtab: 6/10
Population: 9/10
Trimtab Intervention

Restoring mined lands and connecting corridors. Protecting watersheds for urban water security.

Mine reclamationCorridor restorationWatershed protectionFreshwater mussel conservation
Gulf Coast Estuaries & Marshes
8.0
Major cities: Houston, New Orleans, Tampa, Mobile

Highly productive nurseries for marine life. Rapid wetland loss and hypoxia 'dead zone'.

Degradation: 9/10
Biodiversity: 8/10
Trimtab: 7/10
Population: 8/10
Trimtab Intervention

Living shoreline projects and river diversion to rebuild land. Reduce agricultural runoff.

Living shorelinesWetland restorationReduce nutrient pollutionStorm surge protection
Midwest Oak Savanna / Woodland
7.9
Chicago, St. Louis, Indianapolis metro areas

Transition zone between prairie and eastern forest. >99.9% lost to agriculture and development.

Degradation: 9/10
Biodiversity: 6/10
Trimtab: 8/10
Population: 9/10
Trimtab Intervention

Reintroducing fire and oak regeneration. Quick, positive effects on pollinators.

Prescribed fireOak regenerationPollinator habitatUrban-rural corridors
Tallgrass Prairie (Great Plains)
7.3
Kansas City, Wichita, and agricultural communities

Most decimated major ecosystem in North America with >99% loss. Incredibly deep, carbon-rich soils.

Degradation: 10/10
Biodiversity: 7/10
Trimtab: 8/10
Population: 5/10
Trimtab Intervention

Strategic riparian corridor and prairie reconstruction. Connecting remaining fragments.

Prairie reconstructionRiparian buffersCarbon sequestrationPollinator corridors
Great Basin
6.7
Salt Lake City, Reno on the periphery

Cold desert characterized by sagebrush. Invasive cheatgrass fuels fires destroying native habitat.

Degradation: 8/10
Biodiversity: 7/10
Trimtab: 8/10
Population: 4/10
Trimtab Intervention

Restoring sagebrush and controlling invasives. Protects entire biome for Sage-Grouse.

Sagebrush restorationInvasive species controlSage-Grouse habitatFire management

Keystone Watersheds

Strategic interventions in these watersheds create cascading ecological and societal benefits

Colorado River Basin
Systemic overallocation. Demand far exceeds supply; the 'Law of the River' is obsolete.
Trimtab: 10/10
Trimtab Intervention

Modernize Water Law & Incentivize Agricultural Efficiency. Ag uses ~80% of the water.

Societal Impact

Prevents mandatory cuts to major cities (Phoenix, LA) and avoids collapse of agricultural economies.

Ecological Impact

Restores riparian zones, reverses salinization, allows experimental flood flows to rebuild Grand Canyon sandbars.

Mississippi River Basin (Upper Midwest)
Hypoxic 'Dead Zone' in Gulf. Agricultural runoff from Corn Belt causes massive algal blooms.
Trimtab: 9/10
Trimtab Intervention

Strategic Perennialization. Convert marginal croplands to perennial crops & restore riparian buffers.

Societal Impact

Protects a $2.8B Gulf fishery. Ensures clean drinking water for millions from St. Louis to New Orleans.

Ecological Impact

Dramatically reduces nitrogen/phosphorus pollution, restoring Gulf aquatic life. Increases carbon sequestration.

Central Valley Aquifer (California)
Groundwater Overdraft. Most overdrafted aquifer in the U.S.; land is subsiding.
Trimtab: 9/10
Trimtab Intervention

Managed Aquifer Recharge (MAR) & Cropland Fallowing. Intentional flooding during wet years.

Societal Impact

Prevents collapse of US fruit/vegetable/nut supply. Halts catastrophic infrastructure damage.

Ecological Impact

Recharges baseflows for Central Valley rivers, supporting salmon and aquatic life.

Everglades (Kissimmee River → Lake Okeechobee → Everglades)
Disrupted 'River of Grass'. System was drained and channelized, destroying the slow sheet flow.
Trimtab: 9/10
Trimtab Intervention

Comprehensive Flow Restoration. Continue Kissimmee River restoration and build water storage.

Societal Impact

Provides freshwater for 9M Floridians. Reduces toxic algae blooms that harm tourism and health.

Ecological Impact

Revives ridge-and-slough landscape, restores wading bird populations (90% loss), protects estuaries.

Columbia River Basin
The Salmon & Orca Crisis. Network of dams blocks migration and alters river thermodynamics.
Trimtab: 8/10
Trimtab Intervention

Strategic Dam Removal & Modification. Continue Lower Snake River dam removal and fish passage tech.

Societal Impact

Revives cultural and economic cornerstone for Native American tribes. Protects Southern Resident Orcas.

Ecological Impact

Restores world's greatest salmon runs, bringing ocean-derived nutrients deep into forest ecosystems.

Platte River Basin (Great Plains)
Peak Flow Elimination. Dams and irrigation have flattened the river's hydrograph.
Trimtab: 8/10
Trimtab Intervention

Environmental Flows ('E-flows'). Manage dam releases to mimic natural high spring flows.

Societal Impact

Secures water for agriculture and cities, avoiding costly legal battles over endangered species.

Ecological Impact

Critical for migratory birds (Sandhill Cranes, Whooping Cranes). Rejuvenates riparian cottonwood forests.

Apalachicola-Chattahoochee-Flint (ACF) Basin
Tri-State 'Water Wars'. Upstream consumption (Atlanta) threatens downstream ecosystems and economies.
Trimtab: 8/10
Trimtab Intervention

Water Efficiency in Metropolitan Atlanta. Massive investment in grey and green infrastructure.

Societal Impact

Resolves decades of litigation between GA, AL, and FL. Secures iconic Apalachicola Bay oyster industry.

Ecological Impact

Maintains freshwater flows to estuary, preventing saltwater intrusion in one of North America's most productive estuaries.

Rio Grande River Basin
A Dying River. Over-allocated and often runs dry before reaching the Gulf.
Trimtab: 7/10
Trimtab Intervention

Rio Grande 'Compact' Modernization & Riparian Restoration. Update water sharing agreements.

Societal Impact

Secures vital water source for agriculture and cities (Ciudad Juarez/El Paso). Reduces transboundary tensions.

Ecological Impact

Prevents complete loss of aquatic habitat. Native Bosque acts as natural sponge, filtering water.

What is a "Trimtab"?

A trimtab is a small rudder on a ship's main rudder. Moving the trimtab creates pressure that turns the main rudder, which turns the entire ship. Buckminster Fuller used this as a metaphor for how small, strategic interventions can create massive systemic change.

In ecological restoration, trimtab interventions are high-leverage actions—like restoring prescribed fire regimes, modernizing water law, or creating riparian buffers—that trigger cascading benefits across entire bioregions and watersheds, affecting millions of people and countless species.