ER \ RAIN
SM \ SNOWMELT
SM \ MELTING SNOW
SM \ VOLCANIC SNOWMELT
IJ \ ICE JAM
IC \ ICE JAM AND RAIN
IC \ ICE JAM AND SNOWMELT
GO \ GLACIER
GO \ GLACIER-DAMMED LAKE
DM \ DAM
DR \ DAM FLOODGATE RELEASE
DR \ DAM FLOODGATE
DM \ LEVEE FAILURE
DM \ DAM FAILURE
DM \ DAM BREAK
RS \ RAIN AND SNOWMELT