Lewis and Clark County, Montana
The "Sleeping Giant" formation north of Helena
Seal
Location in the state of Montana
Montana's location in the U.S.
Founded	1865
Named for	Meriwether Lewis and William Clark
Seat	Helena
Largest city	Helena
Area
• Total	3,498 sq mi (9,060 km2)
• Land	3,459 sq mi (8,959 km2)
• Water	39 sq mi (101 km2), 1.1
Time zone	Mountain: UTC-7/-6
Website	www.lccountymt.gov/home.html
Footnotes: For infobox source see

County Well Data

Well ID	Operator Name	Well Type	Well Status
25-049-05000	Oregon-Montana Gas &Oil Co.	Dry Hole	Dry
25-049-05001	Yandt, Carl	Dry Hole	Dry
25-049-05002	NORTHERN NATURAL GAS PRODUCING CO.	Dry Hole	Dry
25-049-05004	Hanlon Etal	Dry Hole	Dry
25-049-05006	STANOLIND OIL & GAS CO.	Dry Hole	Dry
25-049-05007	Anaconda Company, The	Dry Hole	Dry
25-049-05008	Sun River O & G	Dry Hole	Dry
25-049-05009	Anaconda Company, The	Dry Hole	Dry
25-049-05010	Lewis & Clark Co.	Dry Hole	Dry
25-049-05011	Barr Ranch	Dry Hole	Dry
25-049-07293	Shell Oil Company	Dry Hole	Dry
25-049-08293	Rocky Mountain Oil & Gas Co.	Dry Hole	Dry
25-049-21001	Kilroy Company Of Texas, Inc.	Dry Hole	Dry
25-049-21002	Baumgartner, F. W.	Dry Hole	Dry
25-049-21003	Montana Power Company	Dry Hole	Dry
25-049-21004	MOSBACHER PRODUCTION CO	Dry Hole	Dry
25-049-21005	GETTY OIL COMPANY	Dry Hole	Dry
25-049-21006	Sun Exploration And Production Co	Dry Hole	Dry
25-049-21007	MOSBACHER PRODUCTION CO	Dry Hole	Dry
25-049-21008	Amoco Production Company	Dry Hole	Dry
25-049-21009	Sun Exploration And Production Co	Dry Hole	Dry
25-049-21010	Atlantic Richfield Company	Dry Hole	Dry
25-049-21011	Atlantic Richfield Company	Dry Hole	Dry
25-049-21012	Amoco Production Company	Dry Hole	Dry
25-049-21013	Union Oil Company Of California	Dry Hole	Dry
25-049-21014	Stone & Wolf Llc	Dry Hole	Dry
25-049-21105	Natural Energy Corporation	Dry Hole	Dry
25-049-21106	Flying J Oil and Gas, Inc.	Dry Hole	Dry
25-049-21108	Suncor Energy (Natural Gas) America Inc.	Dry Hole	Dry
25-049-21109	Summit West Oil, LLC	Oil	Active

For data sources see