Subjgrp 81. Maryland
- § 117.543 - Bear Creek.
- § 117.547 - Bush River.
- § 117.549 - Cambridge Harbor.
- § 117.551 - Chester River.
- § 117.553 - Choptank River.
- § 117.555 - College Creek.
- § 117.557 - Curtis Creek.
- § 117.559 - Isle of Wight (Sinepuxent) Bay.
- § 117.561 - Kent Island Narrows.
- § 117.563 - Marshyhope Creek.
- § 117.565 - Miles River.
- § 117.566 - Patapsco River—Middle Branch.
- § 117.567 - Patuxent River.
- § 117.569 - Pocomoke River.
- § 117.570 - Sassafras River.
- § 117.571 - Spa Creek.
- § 117.573 - Stoney Creek.
- § 117.575 - Susquehanna River.
- § 117.577 - Weems Creek.
- § 117.579 - Wicomico River (North Prong).