This resource page for artists lists organizations that have programs and exhibitions which include watermedia.
We suggest you contact these organization for their Exhibition information and dates. 
Alaska Watercolor
American Signature Watermedia
American Watercolor
Baltimore Watercolor Society
Burlingame Art Society (BAS)

Brooklyn Watercolor
California Watercolor
Canadian Soc of Painters in
Center for the Arts Evergreen (CO)
Central Coast Watercolor Society (CA) 
Central Florida Watercolor
Central New York Watercolor
Central Ohio Watercolor
Central Texas Watercolor
Citrus Watercolor Club (FL)
Coachella Valley Watercolor Society (CA)
Colorado Watercolor
Florida Suncoast Watercolor
Florida Watercolor
Georgia Watercolor
Gold Coast Watercolor Society -
Harper College Small Works
Hawaii Watercolor
Illinois Watercolor
International Soc Experimental
Iowa Watercolor
Kentucky Watercolor
Laguna Art-A-Fair (CA)
Lima Area Watercolor Society (OH)
Louisiana Watercolor
Maryland Fed of Art - Works on Paper
Mid Southern Watercolorist (AR)
Michigan Water Color Society 
Minnesota Watercolor
Missouri Watercolor
Montana Watercolor
National Society of Artists

National Watercolor
Nevada Watercolor
New England Watercolor
New Mexico Watercolor
Newton Watercolor Society (MA) 
North East Watercolor Society (NY) 
Niagara Frontier Watercolor
Northern Arizona
Northstar Water Media Society (MN)
Northwest Watercolor Society (WA)
Ohio Watercolor Society
Pennsylvania Watercolor
Philadelphia Watercolor
Pike's Peak Watercolor
Potomac Valley
Red River Watercolor Society, Fargo, ND

Rhode Island Watercolor
Richeson Online Animals, Birds,
Richeson Landscape, Seascape, Architectural
River Road Show
Rocky Mountain Watercolor Society

San Diego Watercolor
Santa Clara Valley Watercolor
SDAI International Exhibition (CA)
SDMAAG Plein Aire Show (CA)
Shenandoah Valley Watercolor
Sierra Watercolor Society (Reno, NV)
Society of Watercolor
Southern Arizona Watercolor Guild
South Bay Watercolor Society (CA)
Southern Watercolor
Southwestern Watercolor
St Louis Watercolor
SVAC Small Image
Tennessee Watercolor
Texas Watercolor
Transparent WC Society of
Utah Watercolor
Valley Watercolor Society (CA)
Vermont Watercolor
Virginia Watercolor
Watercolor Art Society
Watercolor Artists of Sonoma
WC Society of Alabama -
WC Society of North
WC Society of
Watercolor USA Honor Society
Waterloo Watercolor Group (TX)
West Texas Watercolor Society
West Virginia Watercolor
Western Colorado Watercolor Society 
Wyoming Watercolor