Maps

Map 1

(NOAA)

Map 1 highlights the probability of the maximum 24 hour rainfall totals (in any given year) that occured in Boulder County and the Front Range September 9-16 of 2013. The dark purple areas show a 1-in-1000 year occurrence - deeming this event a 1000 year Flood - while the light purple areas show a 1-in-1000 to 1-in-500 year occurrence illustrating the rarity of this flooding.

Map 2
(National Wether Service)

Map 2 shows the total rainfall over a two week period, most of which occurred September 9-16 2013. Boulder County and parts of the Front Range saw what is typically total annual rainfall within a 5-day period.

Map 3
(NASA)

Map 3 shows how the floods transformed the land surface; before September 7 and after September 13. The light blue areas illustrate saturated ground and swollen tributaries and creeks.