The Flats have a standing rule in COMAR:
during the period March 1 through May 3, inclusive, a person authorized in accordance with Natural Resources Article, §4-745, Annotated Code of Maryland, to recreationally angle for finfish may hook striped bass and shall immediately release the striped bass unharmed to the water from which the striped bass was taken in the following areas:
(a) Susquehanna Flats, upstream of a line from a point at or near Sandy Point, defined by Lat. 39º 26.96’N and Long. 76º 03.63’W; then running in an easterly direction to a point at or near Turkey Point, defined by Lat. 39º 27.13’N and Long. 76º 00.70’W and the Susquehanna River downstream from a line connecting a point at or near the Susquehanna State Park boat ramp in Lapidum, defined by Lat. 39º 35.86’N and Long. 76º 07.67’W; then running in a northeasterly direction to a point at or near Twin Rocks, defined by Lat. 39º 36.17’N and Long. 76º 07.56’W; then running in a northeasterly direction to a point at or near Tomes Wharf in Port Deposit, defined by Lat. 39º 36.23’N and Long. 76º 06.99’W;
during the period March 1 through May 3, inclusive, a person authorized in accordance with Natural Resources Article, §4-745, Annotated Code of Maryland, to recreationally angle for finfish may hook striped bass and shall immediately release the striped bass unharmed to the water from which the striped bass was taken in the following areas:
(a) Susquehanna Flats, upstream of a line from a point at or near Sandy Point, defined by Lat. 39º 26.96’N and Long. 76º 03.63’W; then running in an easterly direction to a point at or near Turkey Point, defined by Lat. 39º 27.13’N and Long. 76º 00.70’W and the Susquehanna River downstream from a line connecting a point at or near the Susquehanna State Park boat ramp in Lapidum, defined by Lat. 39º 35.86’N and Long. 76º 07.67’W; then running in a northeasterly direction to a point at or near Twin Rocks, defined by Lat. 39º 36.17’N and Long. 76º 07.56’W; then running in a northeasterly direction to a point at or near Tomes Wharf in Port Deposit, defined by Lat. 39º 36.23’N and Long. 76º 06.99’W;