Club: Groups of teams that compete on a national basis.

Workout Group: local groups within the Hydropower Masters Swim Club. See the workout group list here.

Local Masters Swimming Committee (LMSC): The Inland Northwest.
The local organization that registers swimmers and runs swimming events. Our geographic area is from the Cascade Range east to the Montana border, south to the Oregon border, and north to the Canadian border.

United States Masters Swimming (USMS): The parent organization for all masters swimming in the United States.

Northwest Zone: In addition to the LMSCs, the country is divided up into larger areas called zones. Inland NW Masters is in the Northwest Zone which is comprised of the Pacific Northwest Association LMSC (Western Washington), Oregon LMSC, Utah LMSC, Snake River LMSC (Southern Idaho), Montana LMSC and Alaska LMSC.

Postal Event: A swimming competition conducted at your local pool with the results sent to the event host for tabulating. At this level you would be competing with all swimmers of your gender and age group from across the country. This is a great way of competing without leaving home. Postal events include:

USMS/Aquatic Sports Convention: an event that happens each fall where the leadership of United States Masters Swimming meets to conduct the business of the organization. Such business might include coaching seminars, rule changes, and determining the host locations for national championships. In addition to USMS, other national aquatic governing bodies also meet during the same convention, including USA Swimming, USA Water Polo, Synchronized Swimming, and USA Diving.