The Committee on Hydrology (COH) reports to and provides technical advice to the Board on hydrological issues. The COH studies questions related to the quantity of water in streams crossing provincial borders. The COH also reviews apportionable flow calculations for use in the Master Agreement's formula. The Committee also reports any unusual or emergency water quantity issues using the Contingency Plan. The Secretariat provides support as the COH is chaired by the Executive Director. The COH Secretary participates in the technical work and records Meeting Minutes. The Secretariat computes apportionable flows. Environment and Climate Change Canada presents the annual hydrometric and meteorological monitoring plan for recommendation by the COH and approval by the Board.