Thin Grey Lines: Confrontations With Risk on Colorado’s Front Range Robert Soden Leah Sprain Leysia Palen Department of Computer Science Department of Communication Department of Information Science University of Colorado Boulder University of Colorado Boulder University of Colorado Boulder
[email protected] [email protected] [email protected] ABSTRACT underneath the light pointillism used by mapmakers to This paper reports on two years of ethnographic observation portray area, outlines of buildings, streets, and of the science and politics of flood risk in Colorado, as well neighborhood parks appear: they fall within a Special Flood as design research that examines citizen interaction with Hazard Area, a designation of the Federal Emergency expert knowledge about flooding in the region. We argue Management Agency (FEMA), for places with a greater that the 100-year floodplain standard that inform maps than 1% annual chance of major flooding — this is the 100 produced by the United States Federal Emergency year floodplain. Management Agency (FEMA)'s National Floodplain Insurance Program (NFIP) represent a problematic form of The FEMA Flood Insurance Rate Map (FIRM) (Figure 1), discursive closure of scientific understanding of flood described above, does work – the side of the line that one’s hazard. We show that in order to meet the requirements of house or neighborhood falls on has meaningful the NFIP, this standard acts as a closure that conveys a consequences. Those seeking to construct homes or certainty that the underlying science does not warrant and businesses within the 100-year floodplain are required to foreshortens dialogue on disaster risk and public obtain flood insurance and subject to various restrictions understanding of flood hazard.