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
Difficult Run near Great Falls Stage (ft)Flow (cfs)Observed: 3.25 ft at 6:15AM Jul 11, 2019Observed: 3.25 ft at 6:30AM Jul 11, 2019Observed: 3.25 ft at 6:45AM Jul 11, 2019Observed: 3.25 ft at 7:00AM Jul 11, 2019Observed: 3.25 ft at 7:15AM Jul 11, 2019Observed: 3.24 ft at 7:30AM Jul 11, 2019Observed: 3.24 ft at 7:45AM Jul 11, 2019Observed: 3.24 ft at 8:00AM Jul 11, 2019Observed: 3.24 ft at 8:15AM Jul 11, 2019Observed: 3.24 ft at 8:30AM Jul 11, 2019Observed: 3.23 ft at 8:45AM Jul 11, 2019Observed: 3.23 ft at 9:00AM Jul 11, 2019Observed: 3.23 ft at 9:15AM Jul 11, 2019Observed: 3.23 ft at 9:30AM Jul 11, 2019Observed: 3.23 ft at 9:45AM Jul 11, 2019Observed: 3.23 ft at 10:00AM Jul 11, 2019Observed: 3.23 ft at 10:15AM Jul 11, 2019Observed: 3.22 ft at 10:30AM Jul 11, 2019Observed: 3.22 ft at 10:45AM Jul 11, 2019Observed: 3.22 ft at 11:00AM Jul 11, 2019Observed: 3.22 ft at 11:15AM Jul 11, 2019Observed: 3.22 ft at 11:30AM Jul 11, 2019Observed: 3.22 ft at 11:45AM Jul 11, 2019Observed: 3.22 ft at 12:00PM Jul 11, 2019Observed: 3.22 ft at 12:15PM Jul 11, 2019Observed: 3.22 ft at 12:30PM Jul 11, 2019Observed: 3.22 ft at 12:45PM Jul 11, 2019Observed: 3.22 ft at 1:00PM Jul 11, 2019Observed: 3.22 ft at 1:15PM Jul 11, 2019Observed: 3.22 ft at 1:30PM Jul 11, 2019Observed: 3.22 ft at 1:45PM Jul 11, 2019Observed: 3.22 ft at 2:00PM Jul 11, 2019Observed: 3.22 ft at 2:15PM Jul 11, 2019Observed: 3.22 ft at 2:30PM Jul 11, 2019Observed: 3.22 ft at 2:45PM Jul 11, 2019Observed: 3.22 ft at 3:00PM Jul 11, 2019Observed: 3.22 ft at 3:15PM Jul 11, 2019Observed: 3.22 ft at 3:30PM Jul 11, 2019Observed: 3.22 ft at 3:45PM Jul 11, 2019Observed: 3.22 ft at 4:00PM Jul 11, 2019Observed: 3.22 ft at 4:15PM Jul 11, 2019Observed: 3.22 ft at 4:30PM Jul 11, 2019Observed: 3.22 ft at 4:45PM Jul 11, 2019Observed: 3.22 ft at 5:00PM Jul 11, 2019Observed: 3.23 ft at 5:15PM Jul 11, 2019Observed: 3.43 ft at 5:30PM Jul 11, 2019Observed: 3.59 ft at 5:45PM Jul 11, 2019Observed: 3.59 ft at 6:00PM Jul 11, 2019Observed: 3.59 ft at 6:15PM Jul 11, 2019Observed: 3.57 ft at 6:30PM Jul 11, 2019Observed: 3.54 ft at 6:45PM Jul 11, 2019Observed: 3.51 ft at 7:00PM Jul 11, 2019Observed: 3.49 ft at 7:15PM Jul 11, 2019Observed: 3.56 ft at 7:30PM Jul 11, 2019Observed: 3.99 ft at 7:45PM Jul 11, 2019Observed: 4.31 ft at 8:00PM Jul 11, 2019Observed: 4.57 ft at 8:15PM Jul 11, 2019Observed: 4.8 ft at 8:30PM Jul 11, 2019Observed: 4.99 ft at 8:45PM Jul 11, 2019Observed: 5.13 ft at 9:00PM Jul 11, 2019Observed: 5.2 ft at 9:15PM Jul 11, 2019Observed: 5.29 ft at 9:30PM Jul 11, 2019Observed: 5.32 ft at 9:45PM Jul 11, 2019Highest Observation: 5.33 ft at 10:00PM Jul 11, 2019Highest Observation: 5.33 ft at 10:15PM Jul 11, 2019Highest Observation: 5.33 ft at 10:30PM Jul 11, 2019Observed: 5.32 ft at 10:45PM Jul 11, 2019Observed: 5.27 ft at 11:00PM Jul 11, 2019Observed: 5.21 ft at 11:15PM Jul 11, 2019Observed: 5.16 ft at 11:30PM Jul 11, 2019Observed: 5.11 ft at 11:45PM Jul 11, 2019Observed: 5.06 ft at 12:00AM Jul 12, 2019Observed: 5.03 ft at 12:15AM Jul 12, 2019Observed: 5.01 ft at 12:30AM Jul 12, 2019Observed: 4.97 ft at 12:45AM Jul 12, 2019Observed: 4.92 ft at 1:00AM Jul 12, 2019Observed: 4.87 ft at 1:15AM Jul 12, 2019Observed: 4.82 ft at 1:30AM Jul 12, 2019Observed: 4.76 ft at 1:45AM Jul 12, 2019Observed: 4.7 ft at 2:00AM Jul 12, 2019Observed: 4.64 ft at 2:15AM Jul 12, 2019Observed: 4.58 ft at 2:30AM Jul 12, 2019Observed: 4.52 ft at 2:45AM Jul 12, 2019Observed: 4.46 ft at 3:00AM Jul 12, 2019Observed: 4.4 ft at 3:15AM Jul 12, 2019Observed: 4.35 ft at 3:30AM Jul 12, 2019Observed: 4.3 ft at 3:45AM Jul 12, 2019Observed: 4.25 ft at 4:00AM Jul 12, 2019Observed: 4.2 ft at 4:15AM Jul 12, 2019Observed: 4.16 ft at 4:30AM Jul 12, 2019Observed: 4.12 ft at 4:45AM Jul 12, 2019Observed: 4.11 ft at 5:00AM Jul 12, 2019Observed: 4.07 ft at 5:15AM Jul 12, 2019Observed: 4.04 ft at 5:30AM Jul 12, 2019Observed: 4.01 ft at 5:45AM Jul 12, 2019Observed: 3.99 ft at 6:00AM Jul 12, 2019Observed: 3.97 ft at 6:15AM Jul 12, 2019Observed: 3.93 ft at 6:30AM Jul 12, 2019Observed: 3.92 ft at 6:45AM Jul 12, 2019Observed: 3.9 ft at 7:00AM Jul 12, 2019Observed: 3.88 ft at 7:15AM Jul 12, 2019Observed: 3.86 ft at 7:30AM Jul 12, 2019Observed: 3.85 ft at 7:45AM Jul 12, 2019Observed: 3.83 ft at 8:00AM Jul 12, 2019Observed: 3.81 ft at 8:15AM Jul 12, 2019Observed: 3.79 ft at 8:30AM Jul 12, 2019Observed: 3.78 ft at 8:45AM Jul 12, 2019Observed: 3.76 ft at 9:00AM Jul 12, 2019Observed: 3.75 ft at 9:15AM Jul 12, 2019Observed: 3.74 ft at 9:30AM Jul 12, 2019Observed: 3.72 ft at 9:45AM Jul 12, 2019Observed: 3.71 ft at 10:00AM Jul 12, 2019Observed: 3.7 ft at 10:15AM Jul 12, 2019Observed: 3.69 ft at 10:30AM Jul 12, 2019Observed: 3.67 ft at 10:45AM Jul 12, 2019Observed: 3.66 ft at 11:00AM Jul 12, 2019Observed: 3.65 ft at 11:15AM Jul 12, 2019Observed: 3.64 ft at 11:30AM Jul 12, 2019Observed: 3.63 ft at 11:45AM Jul 12, 2019Observed: 3.62 ft at 12:00PM Jul 12, 2019Observed: 3.61 ft at 12:15PM Jul 12, 2019Observed: 3.6 ft at 12:30PM Jul 12, 2019Observed: 3.59 ft at 12:45PM Jul 12, 2019Observed: 3.58 ft at 1:00PM Jul 12, 2019Observed: 3.57 ft at 1:15PM Jul 12, 2019Observed: 3.56 ft at 1:30PM Jul 12, 2019Observed: 3.55 ft at 1:45PM Jul 12, 2019Observed: 3.54 ft at 2:00PM Jul 12, 2019Observed: 3.53 ft at 2:15PM Jul 12, 2019Observed: 3.52 ft at 2:30PM Jul 12, 2019Observed: 3.51 ft at 2:45PM Jul 12, 2019Observed: 3.5 ft at 3:00PM Jul 12, 2019Observed: 3.49 ft at 3:15PM Jul 12, 2019Observed: 3.48 ft at 3:30PM Jul 12, 2019Observed: 3.48 ft at 3:45PM Jul 12, 2019Observed: 3.47 ft at 4:00PM Jul 12, 2019Observed: 3.46 ft at 4:15PM Jul 12, 2019Observed: 3.45 ft at 4:30PM Jul 12, 2019Observed: 3.44 ft at 4:45PM Jul 12, 2019Observed: 3.43 ft at 5:00PM Jul 12, 2019Observed: 3.43 ft at 5:15PM Jul 12, 2019Observed: 3.42 ft at 5:30PM Jul 12, 2019Observed: 3.42 ft at 5:45PM Jul 12, 2019Observed: 3.41 ft at 6:00PM Jul 12, 2019Observed: 3.4 ft at 6:15PM Jul 12, 2019Observed: 3.4 ft at 6:30PM Jul 12, 2019Observed: 3.39 ft at 6:45PM Jul 12, 2019Observed: 3.39 ft at 7:00PM Jul 12, 2019Observed: 3.38 ft at 7:15PM Jul 12, 2019Observed: 3.38 ft at 7:30PM Jul 12, 2019Observed: 3.37 ft at 7:45PM Jul 12, 2019Observed: 3.37 ft at 8:00PM Jul 12, 2019Observed: 3.37 ft at 8:15PM Jul 12, 2019Observed: 3.36 ft at 8:30PM Jul 12, 2019Observed: 3.36 ft at 8:45PM Jul 12, 2019Observed: 3.36 ft at 9:00PM Jul 12, 2019Observed: 3.36 ft at 9:15PM Jul 12, 2019Observed: 3.35 ft at 9:30PM Jul 12, 2019Observed: 3.35 ft at 9:45PM Jul 12, 2019Observed: 3.35 ft at 10:00PM Jul 12, 2019Observed: 3.35 ft at 10:15PM Jul 12, 2019Observed: 3.34 ft at 10:30PM Jul 12, 2019Observed: 3.34 ft at 10:45PM Jul 12, 2019Observed: 3.34 ft at 11:00PM Jul 12, 2019Observed: 3.33 ft at 11:15PM Jul 12, 2019Observed: 3.33 ft at 11:30PM Jul 12, 2019Observed: 3.33 ft at 11:45PM Jul 12, 2019Observed: 3.33 ft at 12:00AM Jul 13, 2019Observed: 3.33 ft at 12:15AM Jul 13, 2019Observed: 3.33 ft at 12:30AM Jul 13, 2019Observed: 3.32 ft at 12:45AM Jul 13, 2019Observed: 3.32 ft at 1:00AM Jul 13, 2019Observed: 3.32 ft at 1:15AM Jul 13, 2019Observed: 3.32 ft at 1:30AM Jul 13, 2019Observed: 3.31 ft at 1:45AM Jul 13, 2019Observed: 3.31 ft at 2:00AM Jul 13, 2019Observed: 3.3 ft at 2:15AM Jul 13, 2019Observed: 3.3 ft at 2:30AM Jul 13, 2019Observed: 3.3 ft at 2:45AM Jul 13, 2019Observed: 3.29 ft at 3:00AM Jul 13, 2019Observed: 3.29 ft at 3:15AM Jul 13, 2019Observed: 3.29 ft at 3:30AM Jul 13, 2019Observed: 3.29 ft at 3:45AM Jul 13, 2019Observed: 3.29 ft at 4:00AM Jul 13, 2019Observed: 3.28 ft at 4:15AM Jul 13, 2019Observed: 3.28 ft at 4:30AM Jul 13, 2019Observed: 3.28 ft at 4:45AM Jul 13, 2019Observed: 3.28 ft at 5:00AM Jul 13, 2019Observed: 3.27 ft at 5:15AM Jul 13, 2019Observed: 3.27 ft at 5:30AM Jul 13, 2019Observed: 3.27 ft at 5:45AM Jul 13, 2019Observed: 3.27 ft at 6:00AM Jul 13, 2019Observed: 3.27 ft at 6:15AM Jul 13, 2019Observed: 3.27 ft at 6:30AM Jul 13, 2019Observed: 3.26 ft at 6:45AM Jul 13, 2019Observed: 3.26 ft at 7:00AM Jul 13, 2019Observed: 3.26 ft at 7:15AM Jul 13, 2019Observed: 3.26 ft at 7:30AM Jul 13, 2019Observed: 3.26 ft at 7:45AM Jul 13, 2019Observed: 3.26 ft at 8:00AM Jul 13, 2019Observed: 3.26 ft at 8:15AM Jul 13, 2019Observed: 3.25 ft at 8:30AM Jul 13, 2019Observed: 3.26 ft at 8:45AM Jul 13, 2019Observed: 3.26 ft at 9:00AM Jul 13, 2019Observed: 3.27 ft at 9:15AM Jul 13, 2019Observed: 3.27 ft at 9:30AM Jul 13, 2019Observed: 3.26 ft at 9:45AM Jul 13, 2019Observed: 3.26 ft at 10:00AM Jul 13, 2019Observed: 3.25 ft at 10:15AM Jul 13, 2019Observed: 3.25 ft at 10:30AM Jul 13, 2019Observed: 3.25 ft at 10:45AM Jul 13, 2019Observed: 3.24 ft at 11:00AM Jul 13, 2019Observed: 3.24 ft at 11:15AM Jul 13, 2019Observed: 3.24 ft at 11:30AM Jul 13, 2019Observed: 3.24 ft at 11:45AM Jul 13, 2019Observed: 3.24 ft at 12:00PM Jul 13, 2019Observed: 3.23 ft at 12:15PM Jul 13, 2019Observed: 3.23 ft at 12:30PM Jul 13, 2019Observed: 3.23 ft at 12:45PM Jul 13, 2019Observed: 3.23 ft at 1:00PM Jul 13, 2019Observed: 3.23 ft at 1:15PM Jul 13, 2019Observed: 3.23 ft at 1:30PM Jul 13, 2019Observed: 3.23 ft at 1:45PM Jul 13, 2019Observed: 3.23 ft at 2:00PM Jul 13, 2019Observed: 3.23 ft at 2:15PM Jul 13, 2019Observed: 3.23 ft at 2:30PM Jul 13, 2019Observed: 3.22 ft at 2:45PM Jul 13, 2019Observed: 3.22 ft at 3:00PM Jul 13, 2019Observed: 3.22 ft at 3:15PM Jul 13, 2019Observed: 3.22 ft at 3:30PM Jul 13, 2019Observed: 3.22 ft at 3:45PM Jul 13, 2019Observed: 3.22 ft at 4:00PM Jul 13, 2019Observed: 3.21 ft at 4:15PM Jul 13, 2019Observed: 3.21 ft at 4:30PM Jul 13, 2019Observed: 3.21 ft at 4:45PM Jul 13, 2019Observed: 3.21 ft at 5:00PM Jul 13, 2019Observed: 3.21 ft at 5:15PM Jul 13, 2019Observed: 3.21 ft at 5:30PM Jul 13, 2019Observed: 3.21 ft at 5:45PM Jul 13, 2019Observed: 3.21 ft at 6:00PM Jul 13, 2019Observed: 3.21 ft at 6:15PM Jul 13, 2019Observed: 3.2 ft at 6:30PM Jul 13, 2019Observed: 3.21 ft at 6:45PM Jul 13, 2019Observed: 3.2 ft at 7:00PM Jul 13, 2019Observed: 3.2 ft at 7:15PM Jul 13, 2019Observed: 3.2 ft at 7:30PM Jul 13, 2019Observed: 3.2 ft at 7:45PM Jul 13, 2019Observed: 3.2 ft at 8:00PM Jul 13, 2019Observed: 3.2 ft at 8:15PM Jul 13, 2019Observed: 3.2 ft at 8:30PM Jul 13, 2019Observed: 3.2 ft at 8:45PM Jul 13, 2019Observed: 3.2 ft at 9:00PM Jul 13, 2019Observed: 3.2 ft at 9:15PM Jul 13, 2019Observed: 3.2 ft at 9:30PM Jul 13, 2019Observed: 3.2 ft at 9:45PM Jul 13, 2019Observed: 3.2 ft at 10:00PM Jul 13, 2019Observed: 3.2 ft at 10:15PM Jul 13, 2019Observed: 3.2 ft at 10:30PM Jul 13, 2019Observed: 3.2 ft at 10:45PM Jul 13, 2019Observed: 3.19 ft at 11:00PM Jul 13, 2019Observed: 3.19 ft at 11:15PM Jul 13, 2019Observed: 3.19 ft at 11:30PM Jul 13, 2019Observed: 3.19 ft at 11:45PM Jul 13, 2019Observed: 3.19 ft at 12:00AM Jul 14, 2019Observed: 3.19 ft at 12:15AM Jul 14, 2019Observed: 3.19 ft at 12:30AM Jul 14, 2019Observed: 3.19 ft at 12:45AM Jul 14, 2019Observed: 3.19 ft at 1:00AM Jul 14, 2019Observed: 3.19 ft at 1:15AM Jul 14, 2019Observed: 3.19 ft at 1:30AM Jul 14, 2019Observed: 3.18 ft at 1:45AM Jul 14, 2019Observed: 3.18 ft at 2:00AM Jul 14, 2019Observed: 3.18 ft at 2:15AM Jul 14, 2019Observed: 3.18 ft at 2:30AM Jul 14, 2019Observed: 3.18 ft at 2:45AM Jul 14, 2019Observed: 3.18 ft at 3:00AM Jul 14, 2019Observed: 3.18 ft at 3:15AM Jul 14, 2019Observed: 3.18 ft at 3:30AM Jul 14, 2019Observed: 3.18 ft at 3:45AM Jul 14, 2019Observed: 3.18 ft at 4:00AM Jul 14, 2019Observed: 3.18 ft at 4:15AM Jul 14, 2019Observed: 3.18 ft at 4:30AM Jul 14, 2019Observed: 3.18 ft at 4:45AM Jul 14, 2019Observed: 3.17 ft at 5:00AM Jul 14, 2019Observed: 3.17 ft at 5:15AM Jul 14, 2019Observed: 3.17 ft at 5:30AM Jul 14, 2019Observed: 3.17 ft at 5:45AM Jul 14, 2019Observed: 3.17 ft at 6:00AM Jul 14, 2019Observed: 3.17 ft at 6:15AM Jul 14, 2019Observed: 3.17 ft at 6:30AM Jul 14, 2019Observed: 3.17 ft at 6:45AM Jul 14, 2019Observed: 3.17 ft at 7:00AM Jul 14, 2019Observed: 3.17 ft at 7:15AM Jul 14, 2019Observed: 3.17 ft at 7:30AM Jul 14, 2019Observed: 3.17 ft at 7:45AM Jul 14, 2019Observed: 3.17 ft at 8:00AM Jul 14, 2019Observed: 3.17 ft at 8:15AM Jul 14, 2019Observed: 3.17 ft at 8:30AM Jul 14, 2019Observed: 3.17 ft at 8:45AM Jul 14, 2019Observed: 3.17 ft at 9:00AM Jul 14, 2019Observed: 3.17 ft at 9:15AM Jul 14, 2019Observed: 3.17 ft at 9:30AM Jul 14, 2019Observed: 3.17 ft at 9:45AM Jul 14, 2019Observed: 3.17 ft at 10:00AM Jul 14, 2019Observed: 3.17 ft at 10:15AM Jul 14, 2019Observed: 3.16 ft at 10:30AM Jul 14, 2019Observed: 3.16 ft at 10:45AM Jul 14, 2019Observed: 3.16 ft at 11:00AM Jul 14, 2019Observed: 3.16 ft at 11:15AM Jul 14, 2019Observed: 3.16 ft at 11:30AM Jul 14, 2019Observed: 3.16 ft at 11:45AM Jul 14, 2019Observed: 3.16 ft at 12:00PM Jul 14, 2019Observed: 3.16 ft at 12:15PM Jul 14, 2019Observed: 3.16 ft at 12:30PM Jul 14, 2019Observed: 3.16 ft at 12:45PM Jul 14, 2019Observed: 3.16 ft at 1:00PM Jul 14, 2019Observed: 3.16 ft at 1:15PM Jul 14, 2019Observed: 3.15 ft at 1:30PM Jul 14, 2019Observed: 3.15 ft at 1:45PM Jul 14, 2019Observed: 3.15 ft at 2:00PM Jul 14, 2019Observed: 3.15 ft at 2:15PM Jul 14, 2019Observed: 3.15 ft at 2:30PM Jul 14, 2019Observed: 3.15 ft at 2:45PM Jul 14, 2019Observed: 3.15 ft at 3:00PM Jul 14, 2019Observed: 3.15 ft at 3:15PM Jul 14, 2019Observed: 3.15 ft at 3:30PM Jul 14, 2019Observed: 3.15 ft at 3:45PM Jul 14, 2019Observed: 3.14 ft at 4:00PM Jul 14, 2019Observed: 3.14 ft at 4:15PM Jul 14, 2019Observed: 3.14 ft at 4:30PM Jul 14, 2019Observed: 3.13 ft at 4:45PM Jul 14, 2019Observed: 3.13 ft at 5:00PM Jul 14, 2019Observed: 3.13 ft at 5:15PM Jul 14, 2019Observed: 3.13 ft at 5:30PM Jul 14, 2019Observed: 3.12 ft at 5:45PM Jul 14, 2019Observed: 3.12 ft at 6:00PM Jul 14, 2019Observed: 3.12 ft at 6:15PM Jul 14, 2019Observed: 3.12 ft at 6:30PM Jul 14, 2019Observed: 3.12 ft at 6:45PM Jul 14, 2019Observed: 3.12 ft at 7:00PM Jul 14, 2019Observed: 3.12 ft at 7:15PM Jul 14, 2019Observed: 3.12 ft at 7:30PM Jul 14, 2019Observed: 3.12 ft at 7:45PM Jul 14, 2019Observed: 3.12 ft at 8:00PM Jul 14, 2019Observed: 3.12 ft at 8:15PM Jul 14, 2019Observed: 3.12 ft at 8:30PM Jul 14, 2019Observed: 3.12 ft at 8:45PM Jul 14, 2019Observed: 3.12 ft at 9:00PM Jul 14, 2019Observed: 3.12 ft at 9:15PM Jul 14, 2019Observed: 3.12 ft at 9:30PM Jul 14, 2019Observed: 3.12 ft at 9:45PM Jul 14, 2019Observed: 3.12 ft at 10:00PM Jul 14, 2019Observed: 3.12 ft at 10:15PM Jul 14, 2019Observed: 3.12 ft at 10:30PM Jul 14, 2019Observed: 3.12 ft at 10:45PM Jul 14, 2019Observed: 3.12 ft at 11:00PM Jul 14, 2019Observed: 3.12 ft at 11:15PM Jul 14, 2019Observed: 3.12 ft at 11:30PM Jul 14, 2019Observed: 3.12 ft at 11:45PM Jul 14, 2019Observed: 3.12 ft at 12:00AM Jul 15, 2019Observed: 3.11 ft at 12:15AM Jul 15, 2019Observed: 3.11 ft at 12:30AM Jul 15, 2019Observed: 3.11 ft at 12:45AM Jul 15, 2019Observed: 3.11 ft at 1:00AM Jul 15, 2019Observed: 3.11 ft at 1:15AM Jul 15, 2019Observed: 3.11 ft at 1:30AM Jul 15, 2019Observed: 3.11 ft at 1:45AM Jul 15, 2019Observed: 3.11 ft at 2:00AM Jul 15, 2019Observed: 3.11 ft at 2:15AM Jul 15, 2019Observed: 3.11 ft at 2:30AM Jul 15, 2019Observed: 3.11 ft at 2:45AM Jul 15, 2019Observed: 3.11 ft at 3:00AM Jul 15, 2019Observed: 3.11 ft at 3:15AM Jul 15, 2019Observed: 3.11 ft at 3:30AM Jul 15, 2019Observed: 3.11 ft at 3:45AM Jul 15, 2019Observed: 3.11 ft at 4:00AM Jul 15, 2019Observed: 3.1 ft at 4:15AM Jul 15, 2019Observed: 3.1 ft at 4:30AM Jul 15, 2019Observed: 3.1 ft at 4:45AM Jul 15, 2019Observed: 3.1 ft at 5:00AM Jul 15, 2019Observed: 3.1 ft at 5:15AM Jul 15, 2019Observed: 3.1 ft at 5:30AM Jul 15, 2019Observed: 3.1 ft at 5:45AM Jul 15, 2019Observed: 3.1 ft at 6:00AM Jul 15, 2019Observed: 3.1 ft at 6:15AM Jul 15, 2019Observed: 3.1 ft at 6:30AM Jul 15, 2019Observed: 3.1 ft at 6:45AM Jul 15, 2019Observed: 3.1 ft at 7:00AM Jul 15, 2019Observed: 3.1 ft at 7:15AM Jul 15, 2019Observed: 3.1 ft at 7:30AM Jul 15, 2019Observed: 3.1 ft at 7:45AM Jul 15, 2019Observed: 3.1 ft at 8:00AM Jul 15, 2019Observed: 3.1 ft at 8:15AM Jul 15, 2019Observed: 3.1 ft at 8:30AM Jul 15, 2019Observed: 3.1 ft at 8:45AM Jul 15, 2019Observed: 3.1 ft at 9:00AM Jul 15, 2019Observed: 3.1 ft at 9:15AM Jul 15, 2019Observed: 3.1 ft at 9:30AM Jul 15, 2019Observed: 3.1 ft at 9:45AM Jul 15, 2019Observed: 3.1 ft at 10:00AM Jul 15, 2019Observed: 3.1 ft at 10:15AM Jul 15, 2019Observed: 3.1 ft at 10:30AM Jul 15, 2019Observed: 3.1 ft at 10:45AM Jul 15, 2019Observed: 3.1 ft at 11:00AM Jul 15, 2019Observed: 3.1 ft at 11:15AM Jul 15, 2019Observed: 3.1 ft at 11:30AM Jul 15, 2019Observed: 3.1 ft at 11:45AM Jul 15, 2019Observed: 3.1 ft at 12:00PM Jul 15, 2019Observed: 3.1 ft at 12:15PM Jul 15, 2019Observed: 3.1 ft at 12:30PM Jul 15, 2019Observed: 3.1 ft at 12:45PM Jul 15, 2019Observed: 3.1 ft at 1:00PM Jul 15, 2019Observed: 3.1 ft at 1:15PM Jul 15, 2019Observed: 3.1 ft at 1:30PM Jul 15, 2019Observed: 3.1 ft at 1:45PM Jul 15, 2019Observed: 3.1 ft at 2:00PM Jul 15, 2019Observed: 3.1 ft at 2:15PM Jul 15, 2019Observed: 3.09 ft at 2:30PM Jul 15, 2019Observed: 3.09 ft at 2:45PM Jul 15, 2019Observed: 3.09 ft at 3:00PM Jul 15, 2019Observed: 3.09 ft at 3:15PM Jul 15, 2019Observed: 3.09 ft at 3:30PM Jul 15, 2019Observed: 3.09 ft at 3:45PM Jul 15, 2019Observed: 3.09 ft at 4:00PM Jul 15, 2019Observed: 3.09 ft at 4:15PM Jul 15, 2019Observed: 3.08 ft at 4:30PM Jul 15, 2019Observed: 3.08 ft at 4:45PM Jul 15, 2019Observed: 3.08 ft at 5:00PM Jul 15, 2019Observed: 3.07 ft at 5:15PM Jul 15, 2019Observed: 3.08 ft at 5:30PM Jul 15, 2019Observed: 3.07 ft at 5:45PM Jul 15, 2019Observed: 3.08 ft at 6:00PM Jul 15, 2019Observed: 3.08 ft at 6:15PM Jul 15, 2019Observed: 3.08 ft at 6:30PM Jul 15, 2019Observed: 3.08 ft at 6:45PM Jul 15, 2019Observed: 3.07 ft at 7:00PM Jul 15, 2019Observed: 3.07 ft at 7:15PM Jul 15, 2019Observed: 3.08 ft at 7:30PM Jul 15, 2019Observed: 3.08 ft at 7:45PM Jul 15, 2019Observed: 3.08 ft at 8:00PM Jul 15, 2019Observed: 3.08 ft at 8:15PM Jul 15, 2019Observed: 3.08 ft at 8:30PM Jul 15, 2019Observed: 3.08 ft at 8:45PM Jul 15, 2019Observed: 3.08 ft at 9:00PM Jul 15, 2019Observed: 3.08 ft at 9:15PM Jul 15, 2019Observed: 3.08 ft at 9:30PM Jul 15, 2019Observed: 3.08 ft at 9:45PM Jul 15, 2019Observed: 3.08 ft at 10:00PM Jul 15, 2019Observed: 3.08 ft at 10:15PM Jul 15, 2019Observed: 3.08 ft at 10:30PM Jul 15, 2019Observed: 3.08 ft at 10:45PM Jul 15, 2019Observed: 3.08 ft at 11:00PM Jul 15, 2019Observed: 3.08 ft at 11:15PM Jul 15, 2019Observed: 3.08 ft at 11:30PM Jul 15, 2019Observed: 3.08 ft at 11:45PM Jul 15, 2019Observed: 3.07 ft at 12:00AM Jul 16, 2019Observed: 3.07 ft at 12:15AM Jul 16, 2019Observed: 3.07 ft at 12:30AM Jul 16, 2019Observed: 3.07 ft at 12:45AM Jul 16, 2019Observed: 3.07 ft at 1:00AM Jul 16, 2019Observed: 3.07 ft at 1:15AM Jul 16, 2019Observed: 3.07 ft at 1:30AM Jul 16, 2019Observed: 3.07 ft at 1:45AM Jul 16, 2019Observed: 3.07 ft at 2:00AM Jul 16, 2019Observed: 3.07 ft at 2:15AM Jul 16, 2019Observed: 3.07 ft at 2:30AM Jul 16, 2019Observed: 3.07 ft at 2:45AM Jul 16, 2019Observed: 3.07 ft at 3:00AM Jul 16, 2019Observed: 3.07 ft at 3:15AM Jul 16, 2019Observed: 3.07 ft at 3:30AM Jul 16, 2019Observed: 3.07 ft at 3:45AM Jul 16, 2019Observed: 3.07 ft at 4:00AM Jul 16, 2019Observed: 3.07 ft at 4:15AM Jul 16, 2019Observed: 3.07 ft at 4:30AM Jul 16, 2019Observed: 3.07 ft at 4:45AM Jul 16, 2019Observed: 3.07 ft at 5:00AM Jul 16, 2019Observed: 3.07 ft at 5:15AM Jul 16, 2019USGS--Water Resources of the United StatesGFLV2(plotting HGIRG) Graph Created (6:09AM Jul 16, 2019)ObservedLatest observed value: 3.07 ft at 5:15 AM EDT 16-Jul-2019. Flood Stage is 11 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Difficult Run near Great Falls. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 13
Flood Stage: 11
Action Stage: 9
Low Stage (in feet): 0

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
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
20 Water approaches structures near the stream.
13 Water reaches the intersection of Leigh Mill Road and Kelso Road.
11 Leigh Mill Road floods near Difficult Run.
About This Location Collapse

Latitude: 38.975833° N, Longitude: 77.246111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 Not Available Not Available 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:
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
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
Ask Questions/Webmaster
Page last modified: 4-Mar-2019 11:30 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities