Historic Vegetation (GLO) of Iowa

The Government Land Office (GLO) conducted the original public land survey of Iowa during the period 1832 to 1859. Deputy Surveyors and their assistants produced both field notes and township maps that briefly described the land and its natural resources (vegetation, water, soil, landform, and so on) at the time of the survey. These maps and survey notes are one of few data sources about vegetation distribution before much of Iowa changed to a landscape of intensive agriculture. This coverage represents the observed vegetation by the deputy surveyors when laying out the public land surveys in Iowa. Attributes: GLO_CODE,GLO_DESCRIPTION ALE,Swale MEA,Meadow SMR,Swamp/Marsh BAR,Barrens OAK,Oak Barrens SPR,Spring BAY,Bayou OPE,Openings SWA,Swamp BOG,Bog PON,Pond TBR,Timber/Barrens BRU,Brush POO,Pool THI,Thicket CIT,City PPT,Part Prairie/Part Timber TIM,Timber DRA,Drain PRA,Prairie TSB,Timber/Scattering/Barrens FIE,Field RAV,Ravine TSO,Timber/Scattering/Openings GRO,Grove RIV,River (border) VIL,Village IFD,Indian Field ROU,Rough WET,Wetland ISL,Island SAN,Sandbar WIL,Willows LAK,Lake SCA,Scattering Trees WIN,Windfall MAR,Marsh SLU,Slough