NAS - Nonindigenous Aquatic Species

Specimen ID	State	County	Locality	Year	HUC Number	Drainage name	Status
35054	MD		Choptank River	1980	02060005	Choptank	established
35101	MD		northern part of eastern shore	1980	02060002	Chester-Sassafras	established
35128	MD		Northwest area of the bay drainage	1980	02060003	Gunpowder-Patapsco	established
35095	MD		Patuxent drainage	1980	02060006	Patuxent	established
35042	MD		Pocomoke River	1980	02080111	Pokomoke-Western Lower Delmarva	established
35131	MD		state non-specific	1980	02000000	Mid Atlantic Region	established
35197	MD		Upper Chesapeake (HUC6) non-specific	1981	02060000	Upper Chesapeake	established
1406215	MD	Anne Arundel	Maryland, Anne Arundel County, North Fork Muddy Creek	2014	02060004	Severn	established
1406223	MD	Anne Arundel	Pond along W side of Ritchie Hwy, 1 mi S of Earleigh Heights.	1975	02060004	Severn	established
280547	MD	Charles	Potomac River, Mattawoman Creek tidal embayment, ca. 2.2 miles of lower reach from Smallwood State Park area upstream to above mouth of Marbury Run, 3.1-1.1 air miles SW-S center Indian Head	2011	02070011	Lower Potomac	established
613342	MD	Dorchester	Higgins Mill Pond, Near Railroad Bridge, Dorchester Co., Maryland	1949	02080110	Tangier	established
613348	MD	Montgomery	Potomac River, Plummer's Island, 0.25 miles below I-495, SW of Bethesda	1995	02070008	Middle Potomac-Catoctin	established
280541	MD	Montgomery	Potomac River, upstream and downstream ends of Plummers Island and Swainson Island area, just E of I-495 crossing, W side of Bethesda	1995	02070008	Middle Potomac-Catoctin	established
613345	MD	Prince George's	Cash Lake Patuxent Refuge	1947	02060006	Patuxent	established
613343	MD	Prince George's	Cash Lake, Patuxent Refuge, Prince Geo. Co., Md.	1950	02060006	Patuxent	established
613346	MD	Prince George's	Cash Lake-Patuxent Refuge	1947	02060006	Patuxent	established
613347	MD	Prince George's	Cash Lake-Patuxent Refuge	1947	02060006	Patuxent	established
157939	MD	Washington	Chesapeake and Ohio Canal National Historical Park	1999	02070004	Conococheague-Opequon	established
613344	MD	Washington	Hagerstown, Md	1998	02070004	Conococheague-Opequon	established

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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