Four map products are available:
The Observatory uses an automatically generated 14 day accumulation of the MODIS NRT daily water to show current conditions. The date on the maps refer to all flooding imaged on that date and 13 days prior. This provides nearly complete geographic coverage under conditions of intermittent heavy cloud cover. Thus, "current conditions" refers to the past two weeks, and the maps may not show flooding until cloud cover permits.
The GIS (.shp and Mapinfo) files used to generate these maps are also available: 1) locate the 10 deg x 10 deg map sheet(s) which include this flood event ("070E040N" spans 70-80E and 40-30N). 2) The daily-updated 14-day MODIS accumulation .shp file set, named "current", can be downloaded from the MODISlance_2wkpro directory. 3) When the daily MODIS files are incorporated, they reside here. 4) This link provides access to the DFO long term record of previous flood events. 5) A flood event folder may also be available and include other GIS data, such as from Landsat or radar satellites, as well as copies of relevant GIS data from the folders described above.
The automated product: This map may incorporate 250 m spatial resolution MODIS Rapid Response Subset data: provided by NASA's LANCE System. It most commonly incorporates data from from an automated MODIS flood processor using LANCE reflectance data. See appropriate Surface Water Record display for more information and technical description.
At selected locations, a time series of satellite microwave-based daily river discharge measurements are available. These define the estimated recurrence interval of mapped flooding. Click on the colored dots in the map display below. Yellow dots: low flow (<50 % mean daily runoff for this date); Blue dots: normal flow; Purple dots: moderate flooding (>1.33 yr recurrence); Red, major flooding (> 5 yr recurrence). See River Watch Global Display for more information.
The River Watch output (representative displays below) indicate the maximum severity and current status of the flooding.
Site 666. Prior to the flood, hydrologic drought conditions were occurring (discharge below the green threshold). No flooding at this location.
Site 662. 10 yr recurrence theshold was reached by flooding at this location.
Site 660. 10 yr recurrence theshold was reached by flooding also at this location.
Brakenridge, G.R., Slayback, D., Kettner, A.J., Policelli, F., De Groeve, T., and Cohen, S., 2014, Current Conditions and Maximum Flood Extent, 2014 Flooding, Northern Italy, DFO Event 4205, http://floodobservatory.colorado.edu/Version3/2014Italy4205.html.
Maps and associated data generated at DFO are available for public use and licensed under a Creative Commons Attribution 3.0 Unported License. Work is supported by the NASA Applications Program (point of contact: Dr. David Green). We acknowledge the Land Atmosphere Near-real time Capability for EOS (LANCE) system operated by NASA/GSFC, and the NASA funding support to the MODIS NRT flood processor at the Goddard Space Flight Center. When used, Landsat 8 data are provided by the U.S. Geological Survey Hazards Data Distribution System. Landsat 8 is jointly managed by NASA and the United States Geological Survey.
Red: Flooding within past 14 days. Light Red: Flooded during this event, now dry. Dark blue, Permanent water, February, 2000 (SWBD*). Very light blue, All flooding mapped by DFO since yr 2000.
*The Shuttle Water Boundary Data are at 90 m spatial resolution and provide a useful reference water.
