Watershed Y4  - Summary of Thiessen Weights
Effective 1937 - December 31, 1938
Raingauge	rg70	rg75
%	10.5	89.5
Effective  January 1, 1939 - July 13, 1943
Raingauge	rg69	rg75a	rg84a
%	57.91	40.78	1.31
Effective  January 1, 1946 - November 20, 1946
Raingauge	rg69	rg75a
%	59.8	40.2
Effective  Novermber 20, 1946 - June 30, 1957
Raingauge	rg69	rg75a	rg84a
%	57.91	40.78	1.31
Effective  July 1, 1957 - May 31, 1968
Raingauge	rg69	rg69b	rg75a	rg84a
%	33.02	49.43	15.61	1.94
Effective  June 1, 1968 - Dec 31,1968
Raingauge	rg69	rg69b	rg75a	rg84a	rg70
%	33.56	48.62	16.49	1.01	0.32