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If you’re wondering where oil and gas production and hydraulic fracturing are happening near you, FracTracker has a new mapping tool that will help you find out.

Researchers at FracTracker, an independent oil and gas research group that started as a mapping project at the University of Pittsburgh’s Center for Healthy Environments and Communities, analyzed oil and gas well location data for all 50 states and created a map showing where most of those wells are, including wells that have been fracked and those that haven’t.

Fracking is the energy industry’s practice of injecting water, sand and chemicals deep underground at high pressure to extract crude oil and natural gas from dense rock formations. It’s controversial because of its not-fully-determined affect on public health and the environment. The fossil fuel produced by way of fracking contributes to climate change through the burning of crude oil and possible leaks of methane and other gas emissions from oil and natural gas production equipment and distribution pipelines.

Using data available from individual state governments, FracTracker researchers counted more than 1.1 million active oil and gas wells across 36 states. The group published most of the raw well location data on its website and mapped them. The result is an interactive map showing generally where you’ll find oil and gas wells, fracked or not, and the oil and gas basins where wells could be drilled in the future.