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Watersheds contained within each of Montgomery Counties zipcodes

Zipcode	Watershed(s) in Zipcode
20707	Lower Patuxent River
20812	Cabin John Creek
20814	Lower Rock Creek
20815	Lower Rock Creek, Little Falls
20816	Little Falls
20817	Cabin John Creek, Rock Run
20818	Potomac River Direct
20832	NW Branch, Hawlings River, Upper Rock Creek
20833	Upper Patuxent River, Lower Patuxent River, Hawlings River
20837	Dry Seneca Creek, Broad Run, Great Seneca Creek
20838	Little Monocacy River
20839	Broad Run, Little Monocacy River, Dry Seneca Creek
20841	Little Seneca Creek, Dry Seneca Creek, Little Monocacy River
20842	Broad Run, Little Monocacy River, Little Bennett Creek, Dry Seneca Creek, Little Seneca Creek
20850	Muddy Branch, Watts Branch, Cabin John Creek, Upper Rock Creek, Lower Rock Creek
20851	Lower Rock Creek
20852	Cabin John Creek, Lower Rock Creek
20853	Upper Rock Creek, Lower Rock Creek
20854	Watts Branch, Muddy Branch, Rock Run, Cabin John Creek
20855	Upper Rock Creek
20860	NW Branch, Hawlings River
20861	Lower Patuxent River, NW Branch, Hawlings River
20862	Hawlings River, Upper Patuxent River
20866	Little Paint Branch, Lower Patuxent River, Paint Branch
20868	Paint Branch, Little Paint Branch
20871	Little Seneca Creek, Little Bennett Creek
20872	Upper Patuxent River, Little Bennett Creek, Great Seneca Creek
20874	Little Seneca Creek, Great Seneca Creek
20876	Little Seneca Creek, Great Seneca Creek
20877	Muddy Branch, Great Seneca Creek, Upper Rock Creek
20878	Great Seneca Creek, Muddy Branch, Watts Branch
20879	Great Seneca Creek, Upper Rock Creek
20880	Great Seneca Creek
20882	Great Seneca Creek, Upper Patuxent River, Hawlings River, Upper Rock Creek
20889	Lower Rock Creek
20892	Lower Rock Creek
20894	Lower Rock Creek
20895	Lower Rock Creek
20896	Lower Rock Creek
20901	Sligo Creek, NW Branch
20902	Sligo Creek, Lower Rock Creek, NW Branch
20903	NW Branch, Paint Branch
20904	Little Paint Branch, Paint Branch, NW Branch
20905	Lower Patuxent River, NW Branch, Paint Branch
20906	Lower Rock Creek, Upper Rock Creek, NW Branch
20910	Sligo Creek, Lower Rock Creek
20912	Sligo Creek
21771	Upper Patuxent River, Great Seneca Creek, Little Bennett Creek
21797	Upper Patuxent River

Disclaimer: Some of the publications posted on the Department of Environmental Protection�s (DEP) web site may be outdated. The Department is currently redesigning the site to bring you updated content and materials. We appreciate your patience and understanding during our web site construction period. If you need information before we are finished, please contact DEP at 240-777-7700.

Last edited: 10/13/2004