Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 
Hydrograph River at a Glance Download
Big Sioux River above Hawarden Stage (ft)Flow (cfs)Observed: 14.84 ft at 7:00PM Apr 11, 2021Observed: 14.83 ft at 7:15PM Apr 11, 2021Observed: 14.84 ft at 7:30PM Apr 11, 2021Observed: 14.83 ft at 7:45PM Apr 11, 2021Observed: 14.83 ft at 8:00PM Apr 11, 2021Observed: 14.83 ft at 8:15PM Apr 11, 2021Observed: 14.82 ft at 8:30PM Apr 11, 2021Observed: 14.81 ft at 8:45PM Apr 11, 2021Observed: 14.83 ft at 9:00PM Apr 11, 2021Observed: 14.84 ft at 9:15PM Apr 11, 2021Observed: 14.82 ft at 9:30PM Apr 11, 2021Observed: 14.82 ft at 9:45PM Apr 11, 2021Observed: 14.82 ft at 9:46PM Apr 11, 2021Observed: 14.84 ft at 10:00PM Apr 11, 2021Observed: 14.84 ft at 10:01PM Apr 11, 2021Observed: 14.84 ft at 10:15PM Apr 11, 2021Observed: 14.84 ft at 10:16PM Apr 11, 2021Observed: 14.84 ft at 10:30PM Apr 11, 2021Observed: 14.84 ft at 10:45PM Apr 11, 2021Observed: 14.84 ft at 11:00PM Apr 11, 2021Observed: 14.81 ft at 11:15PM Apr 11, 2021Observed: 14.82 ft at 11:30PM Apr 11, 2021Observed: 14.84 ft at 11:45PM Apr 11, 2021Observed: 14.85 ft at 12:00AM Apr 12, 2021Observed: 14.84 ft at 12:15AM Apr 12, 2021Observed: 14.85 ft at 12:30AM Apr 12, 2021Observed: 14.85 ft at 12:45AM Apr 12, 2021Observed: 14.85 ft at 1:00AM Apr 12, 2021Observed: 14.83 ft at 1:15AM Apr 12, 2021Observed: 14.85 ft at 1:30AM Apr 12, 2021Observed: 14.85 ft at 1:45AM Apr 12, 2021Observed: 14.84 ft at 2:00AM Apr 12, 2021Observed: 14.84 ft at 2:15AM Apr 12, 2021Observed: 14.85 ft at 2:30AM Apr 12, 2021Observed: 14.85 ft at 2:45AM Apr 12, 2021Observed: 14.87 ft at 3:00AM Apr 12, 2021Observed: 14.86 ft at 3:15AM Apr 12, 2021Observed: 14.86 ft at 3:30AM Apr 12, 2021Observed: 14.87 ft at 3:45AM Apr 12, 2021Observed: 14.87 ft at 4:00AM Apr 12, 2021Observed: 14.87 ft at 4:15AM Apr 12, 2021Observed: 14.87 ft at 4:30AM Apr 12, 2021Observed: 14.88 ft at 4:45AM Apr 12, 2021Observed: 14.85 ft at 5:00AM Apr 12, 2021Observed: 14.86 ft at 5:15AM Apr 12, 2021Observed: 14.86 ft at 5:30AM Apr 12, 2021Observed: 14.86 ft at 5:45AM Apr 12, 2021Observed: 14.86 ft at 5:46AM Apr 12, 2021Observed: 14.86 ft at 6:00AM Apr 12, 2021Observed: 14.86 ft at 6:01AM Apr 12, 2021Observed: 14.84 ft at 6:15AM Apr 12, 2021Observed: 14.84 ft at 6:16AM Apr 12, 2021Observed: 14.87 ft at 6:30AM Apr 12, 2021Observed: 14.86 ft at 6:45AM Apr 12, 2021Observed: 14.87 ft at 7:00AM Apr 12, 2021Observed: 14.88 ft at 7:15AM Apr 12, 2021Observed: 14.87 ft at 7:30AM Apr 12, 2021Observed: 14.87 ft at 7:45AM Apr 12, 2021Observed: 14.88 ft at 8:00AM Apr 12, 2021Observed: 14.85 ft at 8:15AM Apr 12, 2021Observed: 14.88 ft at 8:30AM Apr 12, 2021Observed: 14.89 ft at 8:45AM Apr 12, 2021Observed: 14.89 ft at 9:00AM Apr 12, 2021Observed: 14.89 ft at 9:15AM Apr 12, 2021Observed: 14.88 ft at 9:30AM Apr 12, 2021Observed: 14.88 ft at 9:45AM Apr 12, 2021Observed: 14.88 ft at 10:00AM Apr 12, 2021Observed: 14.89 ft at 10:15AM Apr 12, 2021Observed: 14.89 ft at 10:30AM Apr 12, 2021Observed: 14.91 ft at 10:45AM Apr 12, 2021Observed: 14.9 ft at 11:00AM Apr 12, 2021Observed: 14.9 ft at 11:15AM Apr 12, 2021Observed: 14.9 ft at 11:30AM Apr 12, 2021Observed: 14.89 ft at 11:45AM Apr 12, 2021Observed: 14.9 ft at 12:00PM Apr 12, 2021Observed: 14.89 ft at 12:15PM Apr 12, 2021Observed: 14.9 ft at 12:30PM Apr 12, 2021Observed: 14.91 ft at 12:45PM Apr 12, 2021Observed: 14.91 ft at 1:00PM Apr 12, 2021Observed: 14.9 ft at 1:15PM Apr 12, 2021Observed: 14.9 ft at 1:30PM Apr 12, 2021Observed: 14.9 ft at 1:45PM Apr 12, 2021Observed: 14.9 ft at 1:46PM Apr 12, 2021Observed: 14.91 ft at 2:00PM Apr 12, 2021Observed: 14.91 ft at 2:01PM Apr 12, 2021Observed: 14.92 ft at 2:15PM Apr 12, 2021Observed: 14.92 ft at 2:16PM Apr 12, 2021Observed: 14.91 ft at 2:30PM Apr 12, 2021Observed: 14.93 ft at 2:45PM Apr 12, 2021Observed: 14.91 ft at 3:00PM Apr 12, 2021Observed: 14.91 ft at 3:15PM Apr 12, 2021Observed: 14.92 ft at 3:30PM Apr 12, 2021Observed: 14.93 ft at 3:45PM Apr 12, 2021Observed: 14.91 ft at 4:00PM Apr 12, 2021Observed: 14.9 ft at 4:15PM Apr 12, 2021Observed: 14.92 ft at 4:30PM Apr 12, 2021Observed: 14.92 ft at 4:45PM Apr 12, 2021Observed: 14.93 ft at 5:00PM Apr 12, 2021Highest Observation: 14.94 ft at 5:15PM Apr 12, 2021Observed: 14.92 ft at 5:30PM Apr 12, 2021Observed: 14.91 ft at 5:45PM Apr 12, 2021Observed: 14.93 ft at 6:00PM Apr 12, 2021Observed: 14.92 ft at 6:15PM Apr 12, 2021Observed: 14.92 ft at 6:30PM Apr 12, 2021Observed: 14.92 ft at 6:45PM Apr 12, 2021Observed: 14.93 ft at 7:00PM Apr 12, 2021Observed: 14.91 ft at 7:15PM Apr 12, 2021Observed: 14.91 ft at 7:30PM Apr 12, 2021Observed: 14.92 ft at 7:45PM Apr 12, 2021Observed: 14.91 ft at 8:00PM Apr 12, 2021Observed: 14.92 ft at 8:15PM Apr 12, 2021Observed: 14.91 ft at 8:30PM Apr 12, 2021Observed: 14.89 ft at 8:45PM Apr 12, 2021Observed: 14.9 ft at 9:00PM Apr 12, 2021Observed: 14.9 ft at 9:15PM Apr 12, 2021Observed: 14.91 ft at 9:30PM Apr 12, 2021Observed: 14.91 ft at 9:45PM Apr 12, 2021Observed: 14.91 ft at 9:46PM Apr 12, 2021Observed: 14.91 ft at 10:00PM Apr 12, 2021Observed: 14.91 ft at 10:01PM Apr 12, 2021Observed: 14.92 ft at 10:15PM Apr 12, 2021Observed: 14.92 ft at 10:16PM Apr 12, 2021Observed: 14.91 ft at 10:30PM Apr 12, 2021Observed: 14.92 ft at 10:45PM Apr 12, 2021Observed: 14.93 ft at 11:00PM Apr 12, 2021Observed: 14.92 ft at 11:15PM Apr 12, 2021Observed: 14.92 ft at 11:30PM Apr 12, 2021Observed: 14.91 ft at 11:45PM Apr 12, 2021Observed: 14.92 ft at 12:00AM Apr 13, 2021Observed: 14.92 ft at 12:15AM Apr 13, 2021Observed: 14.93 ft at 12:30AM Apr 13, 2021Observed: 14.91 ft at 12:45AM Apr 13, 2021Observed: 14.92 ft at 1:00AM Apr 13, 2021Observed: 14.93 ft at 1:15AM Apr 13, 2021Observed: 14.92 ft at 1:30AM Apr 13, 2021Observed: 14.93 ft at 1:45AM Apr 13, 2021Highest Observation: 14.94 ft at 2:00AM Apr 13, 2021Observed: 14.93 ft at 2:15AM Apr 13, 2021Observed: 14.92 ft at 2:30AM Apr 13, 2021Observed: 14.92 ft at 2:45AM Apr 13, 2021Observed: 14.93 ft at 3:00AM Apr 13, 2021Observed: 14.93 ft at 3:15AM Apr 13, 2021Observed: 14.93 ft at 3:30AM Apr 13, 2021Observed: 14.91 ft at 3:45AM Apr 13, 2021Observed: 14.92 ft at 4:00AM Apr 13, 2021Observed: 14.93 ft at 4:15AM Apr 13, 2021Highest Observation: 14.94 ft at 4:30AM Apr 13, 2021Highest Observation: 14.94 ft at 4:45AM Apr 13, 2021Observed: 14.92 ft at 5:00AM Apr 13, 2021Observed: 14.92 ft at 5:15AM Apr 13, 2021Highest Observation: 14.94 ft at 5:30AM Apr 13, 2021Observed: 14.92 ft at 5:45AM Apr 13, 2021Observed: 14.92 ft at 5:46AM Apr 13, 2021Observed: 14.91 ft at 6:00AM Apr 13, 2021Observed: 14.91 ft at 6:01AM Apr 13, 2021Observed: 14.93 ft at 6:15AM Apr 13, 2021Observed: 14.93 ft at 6:16AM Apr 13, 2021Highest Observation: 14.94 ft at 6:30AM Apr 13, 2021Observed: 14.92 ft at 6:45AM Apr 13, 2021Observed: 14.93 ft at 7:00AM Apr 13, 2021Highest Observation: 14.94 ft at 7:15AM Apr 13, 2021Observed: 14.93 ft at 7:30AM Apr 13, 2021Observed: 14.93 ft at 7:45AM Apr 13, 2021Highest Observation: 14.94 ft at 8:00AM Apr 13, 2021Observed: 14.93 ft at 8:15AM Apr 13, 2021Observed: 14.93 ft at 8:30AM Apr 13, 2021Observed: 14.92 ft at 8:45AM Apr 13, 2021Observed: 14.92 ft at 9:00AM Apr 13, 2021Highest Observation: 14.94 ft at 9:15AM Apr 13, 2021Observed: 14.92 ft at 9:30AM Apr 13, 2021Observed: 14.93 ft at 9:45AM Apr 13, 2021Highest Observation: 14.94 ft at 10:00AM Apr 13, 2021Observed: 14.93 ft at 10:15AM Apr 13, 2021Observed: 14.91 ft at 10:30AM Apr 13, 2021Highest Observation: 14.94 ft at 10:45AM Apr 13, 2021Highest Observation: 14.94 ft at 11:00AM Apr 13, 2021Highest Observation: 14.94 ft at 11:15AM Apr 13, 2021Highest Observation: 14.94 ft at 11:30AM Apr 13, 2021Observed: 14.93 ft at 11:45AM Apr 13, 2021Observed: 14.93 ft at 12:00PM Apr 13, 2021Observed: 14.92 ft at 12:15PM Apr 13, 2021Observed: 14.92 ft at 12:30PM Apr 13, 2021Observed: 14.93 ft at 12:45PM Apr 13, 2021Observed: 14.93 ft at 1:00PM Apr 13, 2021Observed: 14.93 ft at 1:15PM Apr 13, 2021Observed: 14.92 ft at 1:30PM Apr 13, 2021Observed: 14.92 ft at 1:45PM Apr 13, 2021Observed: 14.92 ft at 1:46PM Apr 13, 2021Observed: 14.93 ft at 2:00PM Apr 13, 2021Observed: 14.93 ft at 2:01PM Apr 13, 2021Observed: 14.93 ft at 2:15PM Apr 13, 2021Observed: 14.93 ft at 2:16PM Apr 13, 2021Observed: 14.92 ft at 2:30PM Apr 13, 2021Observed: 14.91 ft at 2:45PM Apr 13, 2021Observed: 14.92 ft at 3:00PM Apr 13, 2021Observed: 14.92 ft at 3:15PM Apr 13, 2021Observed: 14.92 ft at 3:30PM Apr 13, 2021Observed: 14.93 ft at 3:45PM Apr 13, 2021Observed: 14.91 ft at 4:00PM Apr 13, 2021Observed: 14.91 ft at 4:15PM Apr 13, 2021Observed: 14.9 ft at 4:30PM Apr 13, 2021Observed: 14.91 ft at 4:45PM Apr 13, 2021Observed: 14.9 ft at 5:00PM Apr 13, 2021Observed: 14.89 ft at 5:15PM Apr 13, 2021Observed: 14.91 ft at 5:30PM Apr 13, 2021Observed: 14.9 ft at 5:45PM Apr 13, 2021Observed: 14.9 ft at 6:00PM Apr 13, 2021Observed: 14.89 ft at 6:15PM Apr 13, 2021Observed: 14.89 ft at 6:30PM Apr 13, 2021Observed: 14.89 ft at 6:45PM Apr 13, 2021Observed: 14.9 ft at 7:00PM Apr 13, 2021Observed: 14.89 ft at 7:15PM Apr 13, 2021Observed: 14.88 ft at 7:30PM Apr 13, 2021Observed: 14.88 ft at 7:45PM Apr 13, 2021Observed: 14.88 ft at 8:00PM Apr 13, 2021Observed: 14.89 ft at 8:15PM Apr 13, 2021Observed: 14.88 ft at 8:30PM Apr 13, 2021Observed: 14.89 ft at 8:45PM Apr 13, 2021Observed: 14.87 ft at 9:00PM Apr 13, 2021Observed: 14.88 ft at 9:15PM Apr 13, 2021Observed: 14.88 ft at 9:30PM Apr 13, 2021Observed: 14.88 ft at 9:45PM Apr 13, 2021Observed: 14.88 ft at 9:46PM Apr 13, 2021Observed: 14.86 ft at 10:00PM Apr 13, 2021Observed: 14.86 ft at 10:01PM Apr 13, 2021Observed: 14.88 ft at 10:15PM Apr 13, 2021Observed: 14.88 ft at 10:16PM Apr 13, 2021Observed: 14.86 ft at 10:30PM Apr 13, 2021Observed: 14.86 ft at 10:45PM Apr 13, 2021Observed: 14.87 ft at 11:00PM Apr 13, 2021Observed: 14.87 ft at 11:15PM Apr 13, 2021Observed: 14.87 ft at 11:30PM Apr 13, 2021Observed: 14.87 ft at 11:45PM Apr 13, 2021Observed: 14.88 ft at 12:00AM Apr 14, 2021Observed: 14.87 ft at 12:15AM Apr 14, 2021Observed: 14.86 ft at 12:30AM Apr 14, 2021Observed: 14.87 ft at 12:45AM Apr 14, 2021Observed: 14.85 ft at 1:00AM Apr 14, 2021Observed: 14.85 ft at 1:15AM Apr 14, 2021Observed: 14.85 ft at 1:30AM Apr 14, 2021Observed: 14.86 ft at 1:45AM Apr 14, 2021Observed: 14.87 ft at 2:00AM Apr 14, 2021Observed: 14.87 ft at 2:15AM Apr 14, 2021Observed: 14.85 ft at 2:30AM Apr 14, 2021Observed: 14.85 ft at 2:45AM Apr 14, 2021Observed: 14.85 ft at 3:00AM Apr 14, 2021Observed: 14.85 ft at 3:15AM Apr 14, 2021Observed: 14.88 ft at 3:30AM Apr 14, 2021Observed: 14.85 ft at 3:45AM Apr 14, 2021Observed: 14.84 ft at 4:00AM Apr 14, 2021Observed: 14.85 ft at 4:15AM Apr 14, 2021Observed: 14.85 ft at 4:30AM Apr 14, 2021Observed: 14.83 ft at 4:45AM Apr 14, 2021Observed: 14.85 ft at 5:00AM Apr 14, 2021Observed: 14.84 ft at 5:15AM Apr 14, 2021Observed: 14.85 ft at 5:30AM Apr 14, 2021Observed: 14.84 ft at 5:45AM Apr 14, 2021Observed: 14.84 ft at 5:46AM Apr 14, 2021Observed: 14.84 ft at 6:00AM Apr 14, 2021Observed: 14.84 ft at 6:01AM Apr 14, 2021Observed: 14.85 ft at 6:15AM Apr 14, 2021Observed: 14.85 ft at 6:16AM Apr 14, 2021Observed: 14.84 ft at 6:30AM Apr 14, 2021Observed: 14.84 ft at 6:45AM Apr 14, 2021Observed: 14.83 ft at 7:00AM Apr 14, 2021Observed: 14.82 ft at 7:15AM Apr 14, 2021Observed: 14.84 ft at 7:30AM Apr 14, 2021Observed: 14.85 ft at 7:45AM Apr 14, 2021Observed: 14.84 ft at 8:00AM Apr 14, 2021Observed: 14.83 ft at 8:15AM Apr 14, 2021Observed: 14.85 ft at 8:30AM Apr 14, 2021Observed: 14.84 ft at 8:45AM Apr 14, 2021Observed: 14.81 ft at 9:00AM Apr 14, 2021Observed: 14.83 ft at 9:15AM Apr 14, 2021Observed: 14.81 ft at 9:30AM Apr 14, 2021Observed: 14.83 ft at 9:45AM Apr 14, 2021Observed: 14.83 ft at 10:00AM Apr 14, 2021Observed: 14.81 ft at 10:15AM Apr 14, 2021Observed: 14.82 ft at 10:30AM Apr 14, 2021Observed: 14.83 ft at 10:45AM Apr 14, 2021Observed: 14.82 ft at 11:00AM Apr 14, 2021Observed: 14.81 ft at 11:15AM Apr 14, 2021Observed: 14.8 ft at 11:30AM Apr 14, 2021Observed: 14.83 ft at 11:45AM Apr 14, 2021Observed: 14.82 ft at 12:00PM Apr 14, 2021Observed: 14.82 ft at 12:15PM Apr 14, 2021Observed: 14.81 ft at 12:30PM Apr 14, 2021Observed: 14.8 ft at 12:45PM Apr 14, 2021Observed: 14.82 ft at 1:00PM Apr 14, 2021Observed: 14.82 ft at 1:15PM Apr 14, 2021Observed: 14.8 ft at 1:30PM Apr 14, 2021Observed: 14.81 ft at 1:45PM Apr 14, 2021Observed: 14.81 ft at 1:46PM Apr 14, 2021Observed: 14.8 ft at 2:00PM Apr 14, 2021Observed: 14.8 ft at 2:01PM Apr 14, 2021Observed: 14.79 ft at 2:15PM Apr 14, 2021Observed: 14.79 ft at 2:16PM Apr 14, 2021Observed: 14.79 ft at 2:30PM Apr 14, 2021Observed: 14.82 ft at 2:45PM Apr 14, 2021Observed: 14.81 ft at 3:00PM Apr 14, 2021Observed: 14.8 ft at 3:15PM Apr 14, 2021Observed: 14.8 ft at 3:30PM Apr 14, 2021Observed: 14.79 ft at 3:45PM Apr 14, 2021Observed: 14.82 ft at 4:00PM Apr 14, 2021Observed: 14.79 ft at 4:15PM Apr 14, 2021Observed: 14.8 ft at 4:30PM Apr 14, 2021Observed: 14.8 ft at 4:45PM Apr 14, 2021Observed: 14.8 ft at 5:00PM Apr 14, 2021Observed: 14.78 ft at 5:15PM Apr 14, 2021Observed: 14.8 ft at 5:30PM Apr 14, 2021Observed: 14.8 ft at 5:45PM Apr 14, 2021Observed: 14.79 ft at 6:00PM Apr 14, 2021Observed: 14.78 ft at 6:15PM Apr 14, 2021Observed: 14.78 ft at 6:30PM Apr 14, 2021Observed: 14.79 ft at 6:45PM Apr 14, 2021Observed: 14.77 ft at 7:00PM Apr 14, 2021Observed: 14.79 ft at 7:15PM Apr 14, 2021Observed: 14.79 ft at 7:30PM Apr 14, 2021Observed: 14.79 ft at 7:45PM Apr 14, 2021Observed: 14.78 ft at 8:00PM Apr 14, 2021Observed: 14.76 ft at 8:15PM Apr 14, 2021Observed: 14.76 ft at 8:30PM Apr 14, 2021Observed: 14.77 ft at 8:45PM Apr 14, 2021Observed: 14.75 ft at 9:00PM Apr 14, 2021Observed: 14.76 ft at 9:15PM Apr 14, 2021Observed: 14.76 ft at 9:30PM Apr 14, 2021Observed: 14.78 ft at 9:45PM Apr 14, 2021Observed: 14.76 ft at 10:00PM Apr 14, 2021Observed: 14.76 ft at 10:02PM Apr 14, 2021Observed: 14.76 ft at 10:15PM Apr 14, 2021Observed: 14.76 ft at 10:17PM Apr 14, 2021Observed: 14.75 ft at 10:30PM Apr 14, 2021Observed: 14.75 ft at 10:32PM Apr 14, 2021Observed: 14.76 ft at 10:45PM Apr 14, 2021Observed: 14.77 ft at 11:00PM Apr 14, 2021Observed: 14.75 ft at 11:15PM Apr 14, 2021Observed: 14.74 ft at 11:30PM Apr 14, 2021Observed: 14.75 ft at 11:45PM Apr 14, 2021Observed: 14.75 ft at 12:00AM Apr 15, 2021Observed: 14.74 ft at 12:15AM Apr 15, 2021Observed: 14.74 ft at 12:30AM Apr 15, 2021Observed: 14.75 ft at 12:45AM Apr 15, 2021Observed: 14.72 ft at 1:00AM Apr 15, 2021Observed: 14.74 ft at 1:15AM Apr 15, 2021Observed: 14.74 ft at 1:30AM Apr 15, 2021Observed: 14.73 ft at 1:45AM Apr 15, 2021Observed: 14.75 ft at 2:00AM Apr 15, 2021Observed: 14.74 ft at 2:15AM Apr 15, 2021Observed: 14.73 ft at 2:30AM Apr 15, 2021Observed: 14.74 ft at 2:45AM Apr 15, 2021Observed: 14.74 ft at 3:00AM Apr 15, 2021Observed: 14.74 ft at 3:15AM Apr 15, 2021Observed: 14.72 ft at 3:30AM Apr 15, 2021Observed: 14.73 ft at 3:45AM Apr 15, 2021Observed: 14.73 ft at 4:00AM Apr 15, 2021Observed: 14.73 ft at 4:15AM Apr 15, 2021Observed: 14.72 ft at 4:30AM Apr 15, 2021Observed: 14.72 ft at 4:45AM Apr 15, 2021Observed: 14.72 ft at 5:00AM Apr 15, 2021Observed: 14.71 ft at 5:15AM Apr 15, 2021Observed: 14.71 ft at 5:30AM Apr 15, 2021Observed: 14.72 ft at 5:45AM Apr 15, 2021Observed: 14.71 ft at 6:00AM Apr 15, 2021Observed: 14.71 ft at 6:01AM Apr 15, 2021Observed: 14.73 ft at 6:15AM Apr 15, 2021Observed: 14.73 ft at 6:16AM Apr 15, 2021Observed: 14.72 ft at 6:30AM Apr 15, 2021Observed: 14.72 ft at 6:31AM Apr 15, 2021Observed: 14.71 ft at 6:45AM Apr 15, 2021Observed: 14.7 ft at 7:00AM Apr 15, 2021Observed: 14.72 ft at 7:15AM Apr 15, 2021Observed: 14.72 ft at 7:30AM Apr 15, 2021Observed: 14.71 ft at 7:45AM Apr 15, 2021Observed: 14.71 ft at 8:00AM Apr 15, 2021Observed: 14.72 ft at 8:15AM Apr 15, 2021Observed: 14.73 ft at 8:30AM Apr 15, 2021Observed: 14.72 ft at 8:45AM Apr 15, 2021Observed: 14.69 ft at 9:00AM Apr 15, 2021Observed: 14.7 ft at 9:15AM Apr 15, 2021Observed: 14.68 ft at 9:30AM Apr 15, 2021Observed: 14.71 ft at 9:45AM Apr 15, 2021Observed: 14.68 ft at 10:00AM Apr 15, 2021Observed: 14.69 ft at 10:15AM Apr 15, 2021Observed: 14.7 ft at 10:30AM Apr 15, 2021Observed: 14.7 ft at 10:45AM Apr 15, 2021Observed: 14.68 ft at 11:00AM Apr 15, 2021Observed: 14.68 ft at 11:15AM Apr 15, 2021Observed: 14.69 ft at 11:30AM Apr 15, 2021Observed: 14.69 ft at 11:45AM Apr 15, 2021Observed: 14.69 ft at 12:00PM Apr 15, 2021Observed: 14.67 ft at 12:15PM Apr 15, 2021Observed: 14.68 ft at 12:30PM Apr 15, 2021Observed: 14.69 ft at 12:45PM Apr 15, 2021Observed: 14.68 ft at 1:00PM Apr 15, 2021Observed: 14.66 ft at 1:15PM Apr 15, 2021Observed: 14.68 ft at 1:30PM Apr 15, 2021Observed: 14.68 ft at 1:45PM Apr 15, 2021Observed: 14.66 ft at 2:00PM Apr 15, 2021Observed: 14.67 ft at 2:15PM Apr 15, 2021Observed: 14.67 ft at 2:30PM Apr 15, 2021Observed: 14.67 ft at 2:45PM Apr 15, 2021Observed: 14.67 ft at 3:00PM Apr 15, 2021Observed: 14.67 ft at 3:15PM Apr 15, 2021Observed: 14.66 ft at 3:30PM Apr 15, 2021Observed: 14.67 ft at 3:45PM Apr 15, 2021Observed: 14.67 ft at 4:00PM Apr 15, 2021Observed: 14.66 ft at 4:15PM Apr 15, 2021Observed: 14.66 ft at 4:30PM Apr 15, 2021Observed: 14.66 ft at 4:45PM Apr 15, 2021Observed: 14.66 ft at 5:00PM Apr 15, 2021Observed: 14.67 ft at 5:15PM Apr 15, 2021Observed: 14.67 ft at 5:30PM Apr 15, 2021Observed: 14.65 ft at 5:45PM Apr 15, 2021Observed: 14.64 ft at 6:00PM Apr 15, 2021Observed: 14.66 ft at 6:15PM Apr 15, 2021Observed: 14.64 ft at 6:30PM Apr 15, 2021Observed: 14.65 ft at 6:45PM Apr 15, 2021Observed: 14.64 ft at 7:00PM Apr 15, 2021Observed: 14.64 ft at 7:15PM Apr 15, 2021Observed: 14.65 ft at 7:30PM Apr 15, 2021Observed: 14.64 ft at 7:45PM Apr 15, 2021Observed: 14.63 ft at 8:00PM Apr 15, 2021Observed: 14.64 ft at 8:15PM Apr 15, 2021Observed: 14.62 ft at 8:30PM Apr 15, 2021Observed: 14.65 ft at 8:45PM Apr 15, 2021Observed: 14.62 ft at 9:00PM Apr 15, 2021Observed: 14.63 ft at 9:15PM Apr 15, 2021Observed: 14.63 ft at 9:30PM Apr 15, 2021Observed: 14.63 ft at 9:45PM Apr 15, 2021Observed: 14.62 ft at 10:00PM Apr 15, 2021Observed: 14.62 ft at 10:01PM Apr 15, 2021Observed: 14.64 ft at 10:15PM Apr 15, 2021Observed: 14.64 ft at 10:16PM Apr 15, 2021Observed: 14.63 ft at 10:30PM Apr 15, 2021Observed: 14.63 ft at 10:31PM Apr 15, 2021Observed: 14.63 ft at 10:45PM Apr 15, 2021Observed: 14.62 ft at 11:00PM Apr 15, 2021Observed: 14.63 ft at 11:15PM Apr 15, 2021Observed: 14.62 ft at 11:30PM Apr 15, 2021Observed: 14.63 ft at 11:45PM Apr 15, 2021Observed: 14.6 ft at 12:00AM Apr 16, 2021Observed: 14.62 ft at 12:15AM Apr 16, 2021Observed: 14.61 ft at 12:30AM Apr 16, 2021Observed: 14.61 ft at 12:45AM Apr 16, 2021Observed: 14.61 ft at 1:00AM Apr 16, 2021Observed: 14.59 ft at 1:15AM Apr 16, 2021Observed: 14.6 ft at 1:30AM Apr 16, 2021Observed: 14.62 ft at 1:45AM Apr 16, 2021Observed: 14.6 ft at 2:00AM Apr 16, 2021Observed: 14.6 ft at 2:15AM Apr 16, 2021Observed: 14.59 ft at 2:30AM Apr 16, 2021Observed: 14.6 ft at 2:45AM Apr 16, 2021Observed: 14.61 ft at 3:00AM Apr 16, 2021Observed: 14.6 ft at 3:15AM Apr 16, 2021Observed: 14.6 ft at 3:30AM Apr 16, 2021Observed: 14.6 ft at 3:45AM Apr 16, 2021Observed: 14.61 ft at 4:00AM Apr 16, 2021Observed: 14.59 ft at 4:15AM Apr 16, 2021Observed: 14.6 ft at 4:30AM Apr 16, 2021Observed: 14.58 ft at 4:45AM Apr 16, 2021Observed: 14.59 ft at 5:00AM Apr 16, 2021Observed: 14.59 ft at 5:15AM Apr 16, 2021Observed: 14.59 ft at 5:30AM Apr 16, 2021Observed: 14.59 ft at 5:45AM Apr 16, 2021Observed: 14.59 ft at 6:00AM Apr 16, 2021Observed: 14.59 ft at 6:01AM Apr 16, 2021Observed: 14.55 ft at 6:15AM Apr 16, 2021Observed: 14.55 ft at 6:16AM Apr 16, 2021Observed: 14.58 ft at 6:30AM Apr 16, 2021Observed: 14.58 ft at 6:31AM Apr 16, 2021Observed: 14.58 ft at 6:45AM Apr 16, 2021Observed: 14.57 ft at 7:00AM Apr 16, 2021Observed: 14.58 ft at 7:15AM Apr 16, 2021Observed: 14.57 ft at 7:30AM Apr 16, 2021Observed: 14.57 ft at 7:45AM Apr 16, 2021Observed: 14.57 ft at 8:00AM Apr 16, 2021Observed: 14.57 ft at 8:15AM Apr 16, 2021Observed: 14.57 ft at 8:30AM Apr 16, 2021Observed: 14.56 ft at 8:45AM Apr 16, 2021Observed: 14.55 ft at 9:00AM Apr 16, 2021Observed: 14.56 ft at 9:15AM Apr 16, 2021Observed: 14.54 ft at 9:30AM Apr 16, 2021Observed: 14.54 ft at 11:45AM Apr 16, 2021Observed: 14.54 ft at 12:00PM Apr 16, 2021Observed: 14.53 ft at 12:15PM Apr 16, 2021Observed: 14.54 ft at 12:30PM Apr 16, 2021Observed: 14.53 ft at 12:45PM Apr 16, 2021Observed: 14.53 ft at 1:00PM Apr 16, 2021Observed: 14.51 ft at 1:15PM Apr 16, 2021Observed: 14.53 ft at 1:30PM Apr 16, 2021Observed: 14.53 ft at 1:45PM Apr 16, 2021Observed: 14.5 ft at 2:00PM Apr 16, 2021Observed: 14.5 ft at 2:01PM Apr 16, 2021Observed: 14.52 ft at 2:15PM Apr 16, 2021Observed: 14.52 ft at 2:16PM Apr 16, 2021Observed: 14.51 ft at 2:30PM Apr 16, 2021Observed: 14.51 ft at 2:31PM Apr 16, 2021Observed: 14.51 ft at 2:45PM Apr 16, 2021Observed: 14.5 ft at 3:00PM Apr 16, 2021Observed: 14.49 ft at 3:15PM Apr 16, 2021Observed: 14.49 ft at 3:30PM Apr 16, 2021Observed: 14.5 ft at 3:45PM Apr 16, 2021Observed: 14.5 ft at 4:00PM Apr 16, 2021Observed: 14.5 ft at 4:15PM Apr 16, 2021Observed: 14.49 ft at 4:30PM Apr 16, 2021Observed: 14.49 ft at 4:45PM Apr 16, 2021Observed: 14.49 ft at 5:00PM Apr 16, 2021Observed: 14.49 ft at 5:15PM Apr 16, 2021Observed: 14.48 ft at 5:30PM Apr 16, 2021Observed: 14.48 ft at 5:45PM Apr 16, 2021Observed: 14.49 ft at 6:00PM Apr 16, 2021Observed: 14.5 ft at 6:15PM Apr 16, 2021Observed: 14.49 ft at 6:30PM Apr 16, 2021Observed: 14.49 ft at 6:45PM Apr 16, 2021Observed: 14.49 ft at 7:00PM Apr 16, 2021Observed: 14.48 ft at 7:15PM Apr 16, 2021Observed: 14.47 ft at 7:30PM Apr 16, 2021Observed: 14.49 ft at 7:45PM Apr 16, 2021Observed: 14.47 ft at 8:00PM Apr 16, 2021Observed: 14.47 ft at 8:15PM Apr 16, 2021Observed: 14.47 ft at 8:30PM Apr 16, 2021Observed: 14.47 ft at 8:45PM Apr 16, 2021Observed: 14.47 ft at 9:00PM Apr 16, 2021Observed: 14.47 ft at 9:15PM Apr 16, 2021Observed: 14.47 ft at 9:30PM Apr 16, 2021Observed: 14.47 ft at 9:45PM Apr 16, 2021Observed: 14.47 ft at 10:00PM Apr 16, 2021Observed: 14.47 ft at 10:01PM Apr 16, 2021Observed: 14.46 ft at 10:15PM Apr 16, 2021Observed: 14.46 ft at 10:16PM Apr 16, 2021Observed: 14.47 ft at 10:30PM Apr 16, 2021Observed: 14.47 ft at 10:31PM Apr 16, 2021Observed: 14.47 ft at 10:45PM Apr 16, 2021Observed: 14.44 ft at 11:00PM Apr 16, 2021Observed: 14.44 ft at 11:15PM Apr 16, 2021Observed: 14.44 ft at 11:30PM Apr 16, 2021Observed: 14.44 ft at 11:45PM Apr 16, 2021Observed: 14.45 ft at 12:00AM Apr 17, 2021Observed: 14.43 ft at 12:15AM Apr 17, 2021Observed: 14.45 ft at 12:30AM Apr 17, 2021Observed: 14.43 ft at 12:45AM Apr 17, 2021Observed: 14.45 ft at 1:00AM Apr 17, 2021Observed: 14.44 ft at 1:15AM Apr 17, 2021Observed: 14.43 ft at 1:30AM Apr 17, 2021Observed: 14.44 ft at 1:45AM Apr 17, 2021Observed: 14.43 ft at 2:00AM Apr 17, 2021Observed: 14.44 ft at 2:15AM Apr 17, 2021Observed: 14.43 ft at 2:30AM Apr 17, 2021Observed: 14.42 ft at 2:45AM Apr 17, 2021Observed: 14.43 ft at 3:00AM Apr 17, 2021Observed: 14.43 ft at 3:15AM Apr 17, 2021Observed: 14.43 ft at 3:30AM Apr 17, 2021Observed: 14.42 ft at 3:45AM Apr 17, 2021Observed: 14.42 ft at 4:00AM Apr 17, 2021Observed: 14.41 ft at 4:15AM Apr 17, 2021Observed: 14.4 ft at 4:30AM Apr 17, 2021Observed: 14.42 ft at 4:45AM Apr 17, 2021Observed: 14.42 ft at 5:00AM Apr 17, 2021Observed: 14.42 ft at 5:15AM Apr 17, 2021Observed: 14.41 ft at 5:30AM Apr 17, 2021Observed: 14.41 ft at 5:45AM Apr 17, 2021Observed: 14.42 ft at 6:00AM Apr 17, 2021Observed: 14.39 ft at 6:15AM Apr 17, 2021Observed: 14.39 ft at 6:30AM Apr 17, 2021Observed: 14.39 ft at 6:45AM Apr 17, 2021Observed: 14.39 ft at 7:00AM Apr 17, 2021Observed: 14.39 ft at 7:15AM Apr 17, 2021Observed: 14.39 ft at 7:30AM Apr 17, 2021Observed: 14.39 ft at 7:45AM Apr 17, 2021Observed: 14.39 ft at 8:00AM Apr 17, 2021Observed: 14.38 ft at 8:15AM Apr 17, 2021Observed: 14.37 ft at 8:30AM Apr 17, 2021Observed: 14.38 ft at 8:45AM Apr 17, 2021Observed: 14.37 ft at 9:00AM Apr 17, 2021Observed: 14.38 ft at 9:15AM Apr 17, 2021Observed: 14.36 ft at 9:30AM Apr 17, 2021Observed: 14.35 ft at 9:45AM Apr 17, 2021Observed: 14.38 ft at 10:00AM Apr 17, 2021Observed: 14.37 ft at 10:15AM Apr 17, 2021Observed: 14.36 ft at 10:30AM Apr 17, 2021Observed: 14.36 ft at 10:45AM Apr 17, 2021Observed: 14.35 ft at 11:00AM Apr 17, 2021Observed: 14.35 ft at 11:15AM Apr 17, 2021Observed: 14.35 ft at 11:30AM Apr 17, 2021Observed: 14.34 ft at 11:45AM Apr 17, 2021Observed: 14.35 ft at 12:00PM Apr 17, 2021Observed: 14.35 ft at 12:15PM Apr 17, 2021Observed: 14.35 ft at 12:30PM Apr 17, 2021Observed: 14.35 ft at 12:45PM Apr 17, 2021Observed: 14.34 ft at 1:00PM Apr 17, 2021Observed: 14.35 ft at 1:15PM Apr 17, 2021Observed: 14.35 ft at 1:30PM Apr 17, 2021Observed: 14.34 ft at 1:45PM Apr 17, 2021Observed: 14.34 ft at 2:00PM Apr 17, 2021Observed: 14.34 ft at 2:01PM Apr 17, 2021Observed: 14.34 ft at 2:15PM Apr 17, 2021Observed: 14.34 ft at 2:16PM Apr 17, 2021Observed: 14.35 ft at 2:30PM Apr 17, 2021Observed: 14.35 ft at 2:31PM Apr 17, 2021Observed: 14.35 ft at 2:45PM Apr 17, 2021Observed: 14.33 ft at 3:00PM Apr 17, 2021Observed: 14.32 ft at 3:15PM Apr 17, 2021Observed: 14.32 ft at 3:30PM Apr 17, 2021Observed: 14.32 ft at 3:45PM Apr 17, 2021Observed: 14.31 ft at 4:00PM Apr 17, 2021Observed: 14.32 ft at 4:15PM Apr 17, 2021Observed: 14.29 ft at 4:30PM Apr 17, 2021Observed: 14.31 ft at 4:45PM Apr 17, 2021Observed: 14.3 ft at 5:00PM Apr 17, 2021Observed: 14.31 ft at 5:15PM Apr 17, 2021Observed: 14.31 ft at 5:30PM Apr 17, 2021Observed: 14.31 ft at 5:45PM Apr 17, 2021Observed: 14.3 ft at 6:00PM Apr 17, 2021Observed: 14.3 ft at 6:15PM Apr 17, 2021Observed: 14.31 ft at 6:30PM Apr 17, 2021Observed: 14.29 ft at 6:45PM Apr 17, 2021Observed: 14.3 ft at 7:00PM Apr 17, 2021Observed: 14.29 ft at 7:15PM Apr 17, 2021Observed: 14.28 ft at 7:30PM Apr 17, 2021Observed: 14.3 ft at 7:45PM Apr 17, 2021Observed: 14.29 ft at 8:00PM Apr 17, 2021Observed: 14.29 ft at 8:15PM Apr 17, 2021Observed: 14.28 ft at 8:30PM Apr 17, 2021Observed: 14.3 ft at 8:45PM Apr 17, 2021Observed: 14.29 ft at 9:00PM Apr 17, 2021Observed: 14.28 ft at 9:15PM Apr 17, 2021Observed: 14.27 ft at 9:30PM Apr 17, 2021Observed: 14.28 ft at 9:45PM Apr 17, 2021Observed: 14.28 ft at 10:00PM Apr 17, 2021Observed: 14.28 ft at 10:02PM Apr 17, 2021Observed: 14.27 ft at 10:15PM Apr 17, 2021Observed: 14.27 ft at 10:17PM Apr 17, 2021Observed: 14.28 ft at 10:30PM Apr 17, 2021Observed: 14.28 ft at 10:32PM Apr 17, 2021Observed: 14.26 ft at 10:45PM Apr 17, 2021Observed: 14.26 ft at 11:00PM Apr 17, 2021Observed: 14.26 ft at 11:15PM Apr 17, 2021Observed: 14.26 ft at 11:30PM Apr 17, 2021Observed: 14.27 ft at 11:45PM Apr 17, 2021Observed: 14.25 ft at 12:00AM Apr 18, 2021Observed: 14.24 ft at 12:15AM Apr 18, 2021Observed: 14.25 ft at 12:30AM Apr 18, 2021Observed: 14.25 ft at 12:45AM Apr 18, 2021Observed: 14.25 ft at 1:00AM Apr 18, 2021Observed: 14.24 ft at 1:15AM Apr 18, 2021Observed: 14.26 ft at 1:30AM Apr 18, 2021Observed: 14.25 ft at 1:45AM Apr 18, 2021Observed: 14.25 ft at 2:00AM Apr 18, 2021Observed: 14.24 ft at 2:15AM Apr 18, 2021Observed: 14.25 ft at 2:30AM Apr 18, 2021Observed: 14.25 ft at 2:45AM Apr 18, 2021Observed: 14.24 ft at 3:00AM Apr 18, 2021Observed: 14.24 ft at 3:15AM Apr 18, 2021Observed: 14.24 ft at 3:30AM Apr 18, 2021Observed: 14.23 ft at 3:45AM Apr 18, 2021Observed: 14.22 ft at 4:00AM Apr 18, 2021Observed: 14.24 ft at 4:15AM Apr 18, 2021Observed: 14.23 ft at 4:30AM Apr 18, 2021Observed: 14.23 ft at 4:45AM Apr 18, 2021Observed: 14.22 ft at 5:00AM Apr 18, 2021Observed: 14.23 ft at 5:15AM Apr 18, 2021Observed: 14.22 ft at 5:30AM Apr 18, 2021Observed: 14.23 ft at 5:45AM Apr 18, 2021Observed: 14.22 ft at 6:00AM Apr 18, 2021Observed: 14.22 ft at 6:01AM Apr 18, 2021Observed: 14.22 ft at 6:15AM Apr 18, 2021Observed: 14.22 ft at 6:16AM Apr 18, 2021Observed: 14.22 ft at 6:30AM Apr 18, 2021Observed: 14.23 ft at 6:45AM Apr 18, 2021Observed: 14.22 ft at 7:00AM Apr 18, 2021Observed: 14.23 ft at 7:15AM Apr 18, 2021Observed: 14.2 ft at 7:30AM Apr 18, 2021Observed: 14.2 ft at 7:45AM Apr 18, 2021Observed: 14.2 ft at 8:00AM Apr 18, 2021Observed: 14.18 ft at 8:15AM Apr 18, 2021Observed: 14.22 ft at 8:30AM Apr 18, 2021Observed: 14.21 ft at 8:45AM Apr 18, 2021Observed: 14.2 ft at 9:00AM Apr 18, 2021Observed: 14.21 ft at 9:15AM Apr 18, 2021Observed: 14.21 ft at 9:30AM Apr 18, 2021Observed: 14.21 ft at 9:45AM Apr 18, 2021Observed: 14.2 ft at 10:00AM Apr 18, 2021Observed: 14.19 ft at 10:15AM Apr 18, 2021Observed: 14.19 ft at 10:30AM Apr 18, 2021Observed: 14.2 ft at 10:45AM Apr 18, 2021Observed: 14.18 ft at 11:00AM Apr 18, 2021Observed: 14.18 ft at 11:15AM Apr 18, 2021Observed: 14.2 ft at 11:30AM Apr 18, 2021Observed: 14.17 ft at 11:45AM Apr 18, 2021Observed: 14.19 ft at 12:00PM Apr 18, 2021Observed: 14.19 ft at 12:15PM Apr 18, 2021Observed: 14.18 ft at 12:30PM Apr 18, 2021Observed: 14.18 ft at 12:45PM Apr 18, 2021Observed: 14.16 ft at 1:00PM Apr 18, 2021Observed: 14.19 ft at 1:15PM Apr 18, 2021Observed: 14.18 ft at 1:30PM Apr 18, 2021Observed: 14.16 ft at 1:45PM Apr 18, 2021Observed: 14.17 ft at 2:00PM Apr 18, 2021Observed: 14.18 ft at 2:15PM Apr 18, 2021Observed: 14.18 ft at 2:17PM Apr 18, 2021Observed: 14.17 ft at 2:30PM Apr 18, 2021Observed: 14.17 ft at 2:32PM Apr 18, 2021Observed: 14.16 ft at 2:45PM Apr 18, 2021Observed: 14.16 ft at 2:47PM Apr 18, 2021Observed: 14.16 ft at 3:00PM Apr 18, 2021Observed: 14.17 ft at 3:15PM Apr 18, 2021Observed: 14.18 ft at 3:30PM Apr 18, 2021Observed: 14.13 ft at 3:45PM Apr 18, 2021Observed: 14.16 ft at 4:00PM Apr 18, 2021Observed: 14.13 ft at 4:15PM Apr 18, 2021Observed: 14.15 ft at 4:30PM Apr 18, 2021Observed: 14.14 ft at 4:45PM Apr 18, 2021Observed: 14.13 ft at 5:00PM Apr 18, 2021Observed: 14.12 ft at 5:15PM Apr 18, 2021Observed: 14.12 ft at 5:30PM Apr 18, 2021Observed: 14.14 ft at 5:45PM Apr 18, 2021Observed: 14.14 ft at 6:00PM Apr 18, 2021Observed: 14.14 ft at 6:15PM Apr 18, 2021Observed: 14.13 ft at 6:30PM Apr 18, 2021Observed: 14.12 ft at 6:45PM Apr 18, 2021Observed: 14.14 ft at 7:00PM Apr 18, 2021Observed: 14.11 ft at 7:15PM Apr 18, 2021Observed: 14.12 ft at 7:30PM Apr 18, 2021Observed: 14.12 ft at 7:45PM Apr 18, 2021Observed: 14.12 ft at 8:00PM Apr 18, 2021Observed: 14.11 ft at 8:15PM Apr 18, 2021Observed: 14.11 ft at 8:30PM Apr 18, 2021Observed: 14.12 ft at 8:45PM Apr 18, 2021Observed: 14.11 ft at 9:00PM Apr 18, 2021Observed: 14.1 ft at 9:15PM Apr 18, 2021Observed: 14.11 ft at 9:30PM Apr 18, 2021Observed: 14.1 ft at 9:45PM Apr 18, 2021Observed: 14.1 ft at 10:00PM Apr 18, 2021Observed: 14.1 ft at 10:15PM Apr 18, 2021Observed: 14.1 ft at 10:17PM Apr 18, 2021Observed: 14.11 ft at 10:30PM Apr 18, 2021Observed: 14.11 ft at 10:32PM Apr 18, 2021Observed: 14.1 ft at 10:45PM Apr 18, 2021Observed: 14.1 ft at 10:47PM Apr 18, 2021Observed: 14.09 ft at 11:00PM Apr 18, 2021Observed: 14.08 ft at 11:15PM Apr 18, 2021Observed: 14.09 ft at 11:30PM Apr 18, 2021Observed: 14.08 ft at 11:45PM Apr 18, 2021Observed: 14.07 ft at 12:00AM Apr 19, 2021Observed: 14.09 ft at 12:15AM Apr 19, 2021Observed: 14.09 ft at 12:30AM Apr 19, 2021Observed: 14.08 ft at 12:45AM Apr 19, 2021Observed: 14.09 ft at 1:00AM Apr 19, 2021Observed: 14.08 ft at 1:15AM Apr 19, 2021Observed: 14.09 ft at 1:30AM Apr 19, 2021Observed: 14.1 ft at 1:45AM Apr 19, 2021Observed: 14.08 ft at 2:00AM Apr 19, 2021Observed: 14.08 ft at 2:15AM Apr 19, 2021Observed: 14.08 ft at 2:30AM Apr 19, 2021Observed: 14.08 ft at 2:45AM Apr 19, 2021Observed: 14.07 ft at 3:00AM Apr 19, 2021Observed: 14.07 ft at 3:15AM Apr 19, 2021Observed: 14.06 ft at 3:30AM Apr 19, 2021Observed: 14.05 ft at 3:45AM Apr 19, 2021Observed: 14.06 ft at 4:00AM Apr 19, 2021Observed: 14.06 ft at 4:15AM Apr 19, 2021Observed: 14.05 ft at 4:30AM Apr 19, 2021Observed: 14.06 ft at 4:45AM Apr 19, 2021Observed: 14.07 ft at 5:00AM Apr 19, 2021Observed: 14.06 ft at 5:15AM Apr 19, 2021Observed: 14.06 ft at 5:30AM Apr 19, 2021Observed: 14.06 ft at 5:45AM Apr 19, 2021Observed: 14.06 ft at 6:00AM Apr 19, 2021Observed: 14.04 ft at 6:15AM Apr 19, 2021Observed: 14.04 ft at 6:17AM Apr 19, 2021Observed: 14.05 ft at 6:30AM Apr 19, 2021Observed: 14.05 ft at 6:32AM Apr 19, 2021Observed: 14.07 ft at 6:45AM Apr 19, 2021Observed: 14.07 ft at 6:47AM Apr 19, 2021Observed: 14.03 ft at 7:00AM Apr 19, 2021Observed: 14.04 ft at 7:15AM Apr 19, 2021Observed: 14.05 ft at 7:30AM Apr 19, 2021Observed: 14.05 ft at 7:45AM Apr 19, 2021Observed: 14.03 ft at 8:00AM Apr 19, 2021Observed: 14.04 ft at 8:15AM Apr 19, 2021Observed: 14.03 ft at 8:30AM Apr 19, 2021Observed: 14.03 ft at 8:45AM Apr 19, 2021Observed: 14.05 ft at 9:00AM Apr 19, 2021Observed: 14.04 ft at 9:15AM Apr 19, 2021Observed: 14.04 ft at 9:30AM Apr 19, 2021Observed: 14.02 ft at 9:45AM Apr 19, 2021Observed: 14.03 ft at 10:00AM Apr 19, 2021Observed: 14.02 ft at 10:15AM Apr 19, 2021Observed: 14.02 ft at 10:30AM Apr 19, 2021Observed: 14.01 ft at 10:45AM Apr 19, 2021Observed: 14.02 ft at 11:00AM Apr 19, 2021Observed: 14.02 ft at 11:15AM Apr 19, 2021Observed: 14.02 ft at 11:30AM Apr 19, 2021Observed: 14.01 ft at 11:45AM Apr 19, 2021Observed: 14.01 ft at 12:00PM Apr 19, 2021Observed: 14.01 ft at 12:15PM Apr 19, 2021Observed: 14.03 ft at 12:30PM Apr 19, 2021Observed: 14.01 ft at 12:45PM Apr 19, 2021Observed: 14.02 ft at 1:00PM Apr 19, 2021Observed: 14.03 ft at 1:15PM Apr 19, 2021Observed: 14.01 ft at 1:30PM Apr 19, 2021Observed: 14.03 ft at 1:45PM Apr 19, 2021Observed: 14.01 ft at 2:00PM Apr 19, 2021Observed: 14.01 ft at 2:15PM Apr 19, 2021Observed: 14.01 ft at 2:16PM Apr 19, 2021Observed: 14.01 ft at 2:30PM Apr 19, 2021Observed: 14.01 ft at 2:31PM Apr 19, 2021Observed: 14.01 ft at 2:45PM Apr 19, 2021Observed: 14.01 ft at 2:46PM Apr 19, 2021Observed: 14 ft at 3:00PM Apr 19, 2021Observed: 14 ft at 3:15PM Apr 19, 2021Observed: 14 ft at 3:30PM Apr 19, 2021Observed: 13.99 ft at 3:45PM Apr 19, 2021Observed: 13.97 ft at 4:00PM Apr 19, 2021Observed: 13.99 ft at 4:15PM Apr 19, 2021Observed: 13.96 ft at 4:30PM Apr 19, 2021Observed: 13.98 ft at 4:45PM Apr 19, 2021Observed: 13.97 ft at 5:00PM Apr 19, 2021Observed: 13.98 ft at 5:15PM Apr 19, 2021Observed: 13.98 ft at 5:30PM Apr 19, 2021Observed: 13.98 ft at 5:45PM Apr 19, 2021Observed: 13.98 ft at 6:00PM Apr 19, 2021Observed: 13.98 ft at 6:15PM Apr 19, 2021Observed: 13.97 ft at 6:30PM Apr 19, 2021Observed: 13.96 ft at 6:45PM Apr 19, 2021Observed: 13.95 ft at 7:00PM Apr 19, 2021Observed: 13.98 ft at 7:15PM Apr 19, 2021Observed: 13.97 ft at 7:30PM Apr 19, 2021Observed: 13.96 ft at 7:45PM Apr 19, 2021Observed: 13.97 ft at 8:00PM Apr 19, 2021Observed: 13.96 ft at 8:15PM Apr 19, 2021Observed: 13.95 ft at 8:30PM Apr 19, 2021Observed: 13.96 ft at 8:45PM Apr 19, 2021Observed: 13.94 ft at 9:00PM Apr 19, 2021Observed: 13.96 ft at 9:15PM Apr 19, 2021Observed: 13.96 ft at 9:30PM Apr 19, 2021Observed: 13.96 ft at 9:45PM Apr 19, 2021Observed: 13.96 ft at 10:00PM Apr 19, 2021Observed: 13.94 ft at 10:15PM Apr 19, 2021Observed: 13.94 ft at 10:16PM Apr 19, 2021Observed: 13.95 ft at 10:30PM Apr 19, 2021Observed: 13.95 ft at 10:31PM Apr 19, 2021Observed: 13.94 ft at 10:45PM Apr 19, 2021Observed: 13.94 ft at 10:46PM Apr 19, 2021Observed: 13.94 ft at 11:00PM Apr 19, 2021Observed: 13.94 ft at 11:15PM Apr 19, 2021Observed: 13.94 ft at 11:30PM Apr 19, 2021Observed: 13.94 ft at 11:45PM Apr 19, 2021Observed: 13.94 ft at 12:00AM Apr 20, 2021Observed: 13.93 ft at 12:15AM Apr 20, 2021Observed: 13.94 ft at 12:30AM Apr 20, 2021Observed: 13.93 ft at 12:45AM Apr 20, 2021Observed: 13.92 ft at 1:00AM Apr 20, 2021Observed: 13.91 ft at 1:15AM Apr 20, 2021Observed: 13.92 ft at 1:30AM Apr 20, 2021Observed: 13.91 ft at 1:45AM Apr 20, 2021Observed: 13.92 ft at 2:00AM Apr 20, 2021Observed: 13.92 ft at 2:15AM Apr 20, 2021Observed: 13.92 ft at 2:30AM Apr 20, 2021Observed: 13.91 ft at 2:45AM Apr 20, 2021Observed: 13.92 ft at 3:00AM Apr 20, 2021Observed: 13.92 ft at 3:15AM Apr 20, 2021Observed: 13.92 ft at 3:30AM Apr 20, 2021Observed: 13.92 ft at 3:45AM Apr 20, 2021Observed: 13.89 ft at 4:00AM Apr 20, 2021Observed: 13.91 ft at 4:15AM Apr 20, 2021Observed: 13.91 ft at 4:30AM Apr 20, 2021Observed: 13.9 ft at 4:45AM Apr 20, 2021Observed: 13.92 ft at 5:00AM Apr 20, 2021Observed: 13.91 ft at 5:15AM Apr 20, 2021Observed: 13.92 ft at 5:30AM Apr 20, 2021Observed: 13.91 ft at 5:45AM Apr 20, 2021Observed: 13.91 ft at 6:00AM Apr 20, 2021Observed: 13.9 ft at 6:15AM Apr 20, 2021Observed: 13.9 ft at 6:16AM Apr 20, 2021Observed: 13.9 ft at 6:30AM Apr 20, 2021Observed: 13.9 ft at 6:31AM Apr 20, 2021Observed: 13.89 ft at 6:45AM Apr 20, 2021Observed: 13.89 ft at 6:46AM Apr 20, 2021Observed: 13.91 ft at 7:00AM Apr 20, 2021Observed: 13.88 ft at 7:15AM Apr 20, 2021Observed: 13.9 ft at 7:30AM Apr 20, 2021Observed: 13.89 ft at 7:45AM Apr 20, 2021Observed: 13.89 ft at 8:00AM Apr 20, 2021Observed: 13.9 ft at 8:15AM Apr 20, 2021Observed: 13.88 ft at 8:30AM Apr 20, 2021Observed: 13.88 ft at 8:45AM Apr 20, 2021Observed: 13.87 ft at 9:00AM Apr 20, 2021Observed: 13.89 ft at 9:15AM Apr 20, 2021Observed: 13.88 ft at 9:30AM Apr 20, 2021Observed: 13.89 ft at 9:45AM Apr 20, 2021Observed: 13.89 ft at 10:00AM Apr 20, 2021Observed: 13.87 ft at 10:15AM Apr 20, 2021Observed: 13.87 ft at 10:30AM Apr 20, 2021Observed: 13.88 ft at 10:45AM Apr 20, 2021Observed: 13.88 ft at 11:00AM Apr 20, 2021Observed: 13.86 ft at 11:15AM Apr 20, 2021Observed: 13.87 ft at 11:30AM Apr 20, 2021Observed: 13.86 ft at 11:45AM Apr 20, 2021Observed: 13.88 ft at 12:00PM Apr 20, 2021Observed: 13.86 ft at 12:15PM Apr 20, 2021Observed: 13.87 ft at 12:30PM Apr 20, 2021Observed: 13.86 ft at 12:45PM Apr 20, 2021Observed: 13.84 ft at 1:00PM Apr 20, 2021Observed: 13.87 ft at 1:15PM Apr 20, 2021Observed: 13.85 ft at 1:30PM Apr 20, 2021Observed: 13.85 ft at 1:45PM Apr 20, 2021Observed: 13.86 ft at 2:00PM Apr 20, 2021Observed: 13.83 ft at 2:15PM Apr 20, 2021Observed: 13.83 ft at 2:16PM Apr 20, 2021Observed: 13.84 ft at 2:30PM Apr 20, 2021Observed: 13.84 ft at 2:31PM Apr 20, 2021Observed: 13.84 ft at 2:45PM Apr 20, 2021Observed: 13.84 ft at 2:46PM Apr 20, 2021Observed: 13.83 ft at 3:00PM Apr 20, 2021Observed: 13.83 ft at 3:15PM Apr 20, 2021Observed: 13.84 ft at 3:30PM Apr 20, 2021Observed: 13.84 ft at 3:45PM Apr 20, 2021Observed: 13.83 ft at 4:00PM Apr 20, 2021Observed: 13.82 ft at 4:15PM Apr 20, 2021Observed: 13.84 ft at 4:30PM Apr 20, 2021Observed: 13.83 ft at 4:45PM Apr 20, 2021Observed: 13.84 ft at 5:00PM Apr 20, 2021Observed: 13.83 ft at 5:15PM Apr 20, 2021Observed: 13.83 ft at 5:30PM Apr 20, 2021Observed: 13.82 ft at 5:45PM Apr 20, 2021Observed: 13.81 ft at 6:00PM Apr 20, 2021Observed: 13.82 ft at 6:15PM Apr 20, 2021Observed: 13.82 ft at 6:30PM Apr 20, 2021Observed: 13.82 ft at 6:45PM Apr 20, 2021Observed: 13.8 ft at 7:00PM Apr 20, 2021Observed: 13.82 ft at 7:15PM Apr 20, 2021Observed: 13.82 ft at 7:30PM Apr 20, 2021Observed: 13.8 ft at 7:45PM Apr 20, 2021Observed: 13.82 ft at 8:00PM Apr 20, 2021Observed: 13.82 ft at 8:15PM Apr 20, 2021Observed: 13.82 ft at 8:30PM Apr 20, 2021Observed: 13.82 ft at 8:45PM Apr 20, 2021Observed: 13.81 ft at 9:00PM Apr 20, 2021Observed: 13.8 ft at 9:15PM Apr 20, 2021Observed: 13.8 ft at 9:30PM Apr 20, 2021Observed: 13.8 ft at 9:45PM Apr 20, 2021Observed: 13.8 ft at 10:00PM Apr 20, 2021Observed: 13.81 ft at 10:15PM Apr 20, 2021Observed: 13.8 ft at 10:30PM Apr 20, 2021USGS--Water Resources of the United StatesHWDI4(plotting HGIRG) Graph Created (11:06PM Apr 20, 2021)ObservedLatest observed value: 13.8 ft at 10:30 PM CDT 20-Apr-2021. Flood Stage is 20.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Big Sioux River above Hawarden are issued as needed during times of high water, but are not routinely available.

Return to Area Map
Upstream Gauge - at Fairview Upstream Gauge Downstream Gauge Downstream Locations
Flood Categories (in feet)
Major Flood Stage: 27
Moderate Flood Stage: 24
Flood Stage: 20.5
Action Stage: 18.5
Low Stage (in feet): -9999

Historic Crests
(1) 35.20 ft on 03/15/2019
(2) 34.00 ft on 06/22/2018
(3) 32.83 ft on 09/15/2019 (P)
(4) 22.38 ft on 05/02/2016
(5) 20.35 ft on 05/23/2017
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 32.83 ft on 09/15/2019 (P)
(2) 35.20 ft on 03/15/2019
(3) 34.00 ft on 06/22/2018
(4) 20.35 ft on 05/23/2017
(5) 22.38 ft on 05/02/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
32 water backs up into the park in Hawarden, and some basements and sewers could begin to have problems.
30.5 Iowa Highway 10 begins to flood.
30 South Dakota Highway 46 begins to flood north of Hawarden.
29.5 County Road 13 begins to flood west of Hawarden.
28.5 River Road begins to flood about 1 1/2 miles south of County Road 13.
24 some farm houses on the South Dakota side of the river are isolated by high water.
20.5 agricultural flooding begins on the South Dakota side of the river.
About This Location Collapse

Latitude: 43.051389° N, Longitude: 96.489444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 20.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 1150.00 1170.50 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
This location became the official NWS river forecast point for the Big Sioux River near Hawarden on January 1, 2017. On Wednesday, April 11, 2018, the elevation defining Flood Stage for HWDI4 will be changed from 19.0 feet to 20.5 feet. How low could the river get?
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities