In the wake of the September 2013 Jamestown flooding and ensuing damage, the Town of Jamestown, Colorado has been working to improve early warning systems for the Town. This project assessed the current systems in place to provide early flood and rainfall warnings and proposed improvements to that system. In addition, the Lynker team developed a desktop analysis of rainfall and geographic data from the 2013 flood events to evaluate the effectiveness of the existing rain/stream gauge network and flood early warning system near Jamestown.
During the analysis, our team explored numerous geo-spatial data products (point, line, polygon, and raster) for the James Creek watershed to fully understand the meteorological and hydrological response of the basin. Using the spatial data products, we developed a comprehensive heat map of the James Creek region to highlight regions of preferential gauge placement. Our staff performed field site assessments within each of the 4 regions of the watershed identified in the analysis. Preferential gauge sites were located and documented for further review (e.g. GPS coordinates, site photos, and parcel information). We also performed a live transmission test at each field location to evaluate the communication signal strength.
Upon final evaluation of the existing gauge network, site visit analysis, budgetary overview, and communications with emergency management personnel, the Lynker team developed a final recommendation for a new rain gauge location that provides enhanced basin rainfall coverage and the highest likelihood of advanced warning lead time during heavy rainfall events.