What is E-19a, Abridged Report on River Gage Sta?
E-19a, Abridged Report on River Gage Sta meaning In hydrologic terms, an abridged version of an E-19, an E-19a updates the E-19 as additional information, or changes occur at the station during the intervening five year period. An E-19a is to be completed anytime a significant change occurs at a forecast point. An E-19a is also used to take the place of an E-19 in documenting any gage history, or information of any non-forecast point (i.e; data point).
reference: National Weather Service Glossary