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Northwest Branch Patapsco River At Baltimore/fort Mchenry (in Mllw)

  

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Hydrograph

Stage Color Key
2.5 ft - Near Flood 3.4 ft - Minor Flood 4.6 ft - Moderate Flood 6 ft - Major Flood

Latest Observation: Wednesday October 7th, 2026 12:00 AM EDT
River Status: Normal

  Height Flow
Currently 1.13 ft N/A
Record 9.77 ft N/A

Forecast
  Date (EDT) Stage (ft) Flow (kcfs)
  Tuesday 10/06/2026 02:00 PM 1.00 N/A
  Tuesday 10/06/2026 03:00 PM 1.30 N/A
  Tuesday 10/06/2026 04:00 PM 1.40 N/A
  Tuesday 10/06/2026 05:00 PM 1.40 N/A
  Tuesday 10/06/2026 06:00 PM 1.20 N/A
  Tuesday 10/06/2026 07:00 PM 1.00 N/A
  Tuesday 10/06/2026 08:00 PM 0.90 N/A

Observation
   Date (EDT)  Stage (ft)  Flow (kcfs)
Tuesday 10/06/2026 09:42 PM 0.70 N/A
Tuesday 10/06/2026 09:48 PM 0.70 N/A
Tuesday 10/06/2026 09:54 PM 0.71 N/A
Tuesday 10/06/2026 10:00 PM 0.72 N/A
Tuesday 10/06/2026 10:06 PM 0.73 N/A
Tuesday 10/06/2026 10:12 PM 0.74 N/A
Tuesday 10/06/2026 10:18 PM 0.75 N/A
Tuesday 10/06/2026 10:24 PM 0.76 N/A
Tuesday 10/06/2026 10:30 PM 0.78 N/A
Tuesday 10/06/2026 10:36 PM 0.80 N/A
Tuesday 10/06/2026 10:42 PM 0.81 N/A
Tuesday 10/06/2026 10:48 PM 0.83 N/A
Tuesday 10/06/2026 10:54 PM 0.85 N/A
Tuesday 10/06/2026 11:00 PM 0.87 N/A
Tuesday 10/06/2026 11:06 PM 0.88 N/A
Tuesday 10/06/2026 11:12 PM 0.90 N/A
Tuesday 10/06/2026 11:18 PM 0.93 N/A
Tuesday 10/06/2026 11:24 PM 0.95 N/A
Tuesday 10/06/2026 11:30 PM 0.98 N/A
Tuesday 10/06/2026 11:36 PM 1.01 N/A
Tuesday 10/06/2026 11:42 PM 1.04 N/A
Tuesday 10/06/2026 11:48 PM 1.07 N/A
Tuesday 10/06/2026 11:54 PM 1.11 N/A

Data Courtesy of the Advanced Hydrologic Prediction Service
Script Courtesy of Dennis at East Masonville Weather with mods by Saratoga-weather.org