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Definitions, Sources, and Explanatory Notes

The EIA-176 form contains responses submitted from an identified universe of pipelines, local distribution companies, and operators of fields, wells or gas processing plants, who distribute gas to end users or transport gas across State borders; or underground natural gas storage operators.

The EIA 191 collects information on working and base gas in reservoirs, injections, withdrawals, and location of reservoirs from operators of all underground natural gas storage fields on a monthly basis.

Field-level data in the "Natural Gas Annual Respondent Query System" (NGARQS) may reflect minor data updates that were not included in the published aggregates in the Natural Gas Monthly and Natural Gas Annual.