1South Dakota Department of Public Safety
2014 Spring Flood
Outlook
2South Dakota Department of Public Safety
Plains Snow Water Equivalent Comparison2014 SWE
3South Dakota Department of Public Safety
Plains Snow Water Equivalent Comparison2011 SWE
4South Dakota Department of Public Safety
Mountain Snow Water Equivalent Comparison2014 SWE
5South Dakota Department of Public Safety
Mountain Snow Water Equivalent Comparison2011 SWE
6South Dakota Department of Public Safety
Drought Comparison2014
7South Dakota Department of Public Safety
Drought Comparison2013
8South Dakota Department of Public Safety
Temperature and PrecipitationOutlook
• 30, 60, 90-day outlook
• Above – normal chances for cooler temperatures• Equal chances of normal, above-normal, or below-normal precipitation
9South Dakota Department of Public Safety
Probability of major flooding onSouth Dakota rivers
10South Dakota Department of Public Safety
Flooding Factor – mountain SWE
11South Dakota Department of Public Safety
Flooding Factor – soil moisture/frost
12
Fort Peck Garrison Oahe Reservoir System0
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End Feb 2011Current (3-5-14)Storage
South Dakota Department of Public Safety
Flooding Factor – reservoir storage
Storage End Feb 2011 Current (3-5-14) Storage
Fort Peck 15.2 12.5 18.7
Garrison 18.4 16 23.8
Oahe 18.9 17.2 23.1
Reservoir System 57.6 50.6 72.4
13South Dakota Department of Public Safety
Flood Fight Preparations
• Conducted a risk assessment on SD rivers.• Staged flood resources across the state.• Participated in USACE and NWS briefings• Engaged DENR as a gut check for USACE• Communicating with Missouri River
communities• Reviewing community infrastructure and
concerns spreadsheets• Reviewed current sandbag contract
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