1926 Map of Griggsville

Lower-lying areas near the river are defined by complex water systems, from Sleight Pond to the Big Swan Pumping Sta, reflecting the era's intensive efforts to manage the river's floodplains for agriculture. Settlement patterns follow the high ground and early transit routes, visible in the established town of Griggsville and the crossing at Florence, where State Highway No 36 meets the river. This survey captures a rural Illinois economy deeply intertwined with its waterways and railroads before the consolidation of rural schools and roads.