Flood Risk · Province · Northern Region
Flood Risk in Nan
No station overflowed the bank in the past 30 days (26 stations)
History available for this province: 9 days (since 27 Sep) · a day counts when at least one reading that day was over the bank
No gauge is over the bank right now · closest: Nam Kon (Ban Phaya Kaeo) Bridge, 2.15 m below the bank
Measured rainfall, last 24 h: highest ~75.4 mm at rain gauge Bo Kluea Tai · Latest reading 15:00
3-day rain forecast: up to ~63 mm at Ban SongKhwae Bridge · area average ~9.8 mm · Source: TMD · updated 05:45
30-Day Trend · 26 Stations · Updated
Statistics and analysis on this page are for reference only and are not an official warning.
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Water gauge map in Nan Province
Map © OpenStreetMap
Overbank High Normal Low Critically Low Red label = how far the water has overflowed the channel · coloured dot = not overflowing (colour shows how full the channel is) · tap for details
Daily highest water level, 30 days in Nan Province
Water above the bank (cm)
Flood risk points in Nan Province
Sorted by number of days over the bank in 30 days-
Nam Kon (Ban Phaya Kaeo) Bridgeน้ำกอน · เชียงกลางDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 2.15 m below the bank LowRain 3 days~5.6 mm
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Nam Khwang (Ban Rong Ngae) Bridgeน้ำขว้าง · ปัวDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 2.29 m below the bank LowRain 3 days~18 mm
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Nam Sai Birgdeน้ำสบสาย · ท่าวังผาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 2.44 m below the bank Critically LowRain 3 days~1.1 mm
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Lamnam Kunน้ำคูณ · ปัวDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 2.48 m below the bank Critically LowRain 3 days~5.9 mm
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Nam Muap (Ban Phu Yaeng) Bridgeน้ำมวบ · สันติสุขDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.11 m below the bank NormalRain 3 days~20 mm
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บ้านน้ำยาวน้ำยาว · ปัวDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.35 m below the bank LowRain 3 days~4.3 mm
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Sa waterแม่น้ำสา · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.84 m below the bank NormalRain 3 days~0.3 mm
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บ้านปางสาน้ำยาว · ท่าวังผาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.90 m below the bank LowRain 3 days~33 mm
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Ban SongKhwae Bridgeน้ำยาว · สองแควDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.92 m below the bank LowRain 3 days~63 mm
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Ban Tongน้ำมวบ · แม่จริมDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 3.97 m below the bank Critically LowRain 3 days~6.0 mm
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Nam Muab (Ban Nam Muab) Birdgeน้ำมวบ · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 4.23 m below the bank Critically LowRain 3 days~11 mm
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Nan 3แม่น้ำน่าน · ภูเพียงDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 4.62 m below the bank NormalRain 3 days~3.5 mm
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Wieng Saแม่น้ำน่าน · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 4.96 m below the bank NormalRain 3 days~0.2 mm
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Nan 1แม่น้ำน่าน · ท่าวังผาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 4.99 m below the bank LowRain 3 days~1.4 mm
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Sa Riverแม่น้ำสา · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 5.50 m below the bank LowRain 3 days~0.2 mm
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Ban Pa Hung Birdgeห้วยแม่ถา · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 5.73 m below the bank Critically LowRain 3 days~1.2 mm
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หน้าสำนักงานป่าไม้แม่น้ำน่าน · ภูเพียงDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 6.03 m below the bank NormalRain 3 days~1.2 mm
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สะพานท่าลี่แม่น้ำน้ำว้า · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 6.99 m below the bank NormalRain 3 days~0.2 mm
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Mae Nam Nan (Ban Piang Ko) Bridgeน้ำราง · เฉลิมพระเกียรติDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 7.48 m below the bank Critically LowRain 3 days~24 mm
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บ้านผาขวางแม่น้ำน่าน · เมืองน่านDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 8.01 m below the bank LowRain 3 days~0.9 mm
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Nan 2แม่น้ำน่าน · ภูเพียงDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 8.38 m below the bank LowRain 3 days~5.0 mm
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Nam Wa (Ban Nam Wa)แม่น้ำน้ำว้า · แม่จริมDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 8.62 m below the bank LowRain 3 days~47 mm
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อ.เวียงสา (N.75) น้ำว้าแม่น้ำน้ำว้า · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 10.75 m below the bank LowRain 3 days~0.2 mm
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อ.เมืองน่าน (N.1)แม่น้ำน่าน · ภูเพียงDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 11.00 m below the bank LowRain 3 days~1.2 mm
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อ.เวียงสา (N.13A) น้ำน่านแม่น้ำน่าน · เวียงสาDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 11.48 m below the bank NormalRain 3 days~0.2 mm
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อ.ท่าวังผา (N.64)แม่น้ำน่าน · เมืองน่านDays over (30 d)0 daysPeak over (cm)–NowNot overflowing · 11.75 m below the bank LowRain 3 days~0.9 mm
About Flood Monitoring & Water Level Data
Flood risk in Nan is analyzed from 30 days of water level history across 26 stations in the province, surfacing points that have frequently gone overbank in the past month. The system counts overbank events (water above bank) and records the maximum water-vs-bank value to rank flood risk points in Nan.
Use this page to check flash flood risk in Nan before travel or when drafting evacuation preparations. Stations at the top of the list are those with the highest overbank frequency in the past 30 days. The daily-maximum trend chart gives a broader view of the water situation in Nan.
FAQ
How is flood risk in Nan calculated?
Calculated from 30-day water level history across monitoring stations in the province. Counts overbank events (water > bank) and records maximum values. More events = higher risk.
Can this be used as an official flood warning?
No. This data is for reference only, not an official warning. Please verify with government agencies.
How often is this updated?
Data is updated several times a day, and the 30-day summary always uses the latest data.