Here is an EPA interactive webpage showing the methane emissions and other emissions that come directly from the gas and oil industry.
Some natural gas supporters can imply that methane only comes from thawing swamps in the arctic, but the EPA has the data. Right here.
You can look it up by state, by county even. By type of greenhouse gas. Numbers are given in metric tons.
Now the drawback to this data is simply this. 95% of emissions from fracking are NOT included in this data. Why? because these wells are not required to report. It is estimated that 95% of emissions are NOT reported to the EPA from fracking.
That is why seven states are now gearing up to sue the EPA to get that information known and reported. NY Attorney General Eric Schneiderman (my new hero) is leading the charge.