these types of small scale uses are usually considered insignificant in terms of their impact of the overall resource source see country profiles associated with this publication at iounuoecclorgenuironmentauaterresourcesahocation enhtm several allocation examples yukon territory in canada the yellow river basin in china costa rica luxembourg and the waikato region in new zealand also indicate water use for emergencies or to deal with exception circumstances or threats such as firefighting floods droughts or other emergencies do not require entitlements in most cases it is used to establish priority access to water during times of scarcity when exceptional circumstances have been declared such as in the case of drought