Holmfoss i Numedalslågen (Numedalslågen): discharge and water level

Holmfoss i Numedalslågen (Numedalslågen): discharge 242 m³/s (231% of mean flow), water level 3.65 m – below mean flood. Measured 23/10/2026, 21:00 CEST.

Now

242 m³/s below mean flood

Water level: 3.645 m (local datum) · Measured: 23/10/2026, 21:00 CEST · uncontrolled

Discharge, recent days (238–242 m³/s)

Mean flow (catchment statistic)105 m³/s
Mean annual flood458 m³/s
5-year flood555 m³/s
50-year flood937 m³/s

NVE flood statistics (culmination values) for 1971–2025.

Source: Data: NVE (Norges vassdrags- og energidirektorat), HydAPI · Licence: NLOD 2.0 · Updated 23/10/2026, 21:30 CEST. Raw data, mostly not yet quality-controlled by NVE. Not an official flood warning – see varsom.no.

🔔 Notify me E-mail on flood levels or your own threshold – not an official warning

Precipitation, last 7 days

28.2 mm fell at MET station Hedrum (1.9 km away).

2026-10-16: 0 mm16.02026-10-17: 2.3 mm17.2.32026-10-18: 0 mm18.02026-10-19: 0 mm19.02026-10-20: 0 mm20.02026-10-21: 5.6 mm21.5.62026-10-22: 20.3 mm22.20.3
Data: MET Norway (Frost API, SN27800) · NLOD 2.0 / CC BY 4.0 · daily values, provisional

Water body status (EU Water Framework Directive)

  • NUMEDALSLAAGEN BRUFOSS- BOMMESTAD NO015-1205-R
    Ecological status: poor (2020) · Chemical: not assessed
    Good status expected: after 2027

Official assessment of the water body at this gauge from the 2022 river basin management plans (WFD target: at least “good”). It rates the whole water body, not today’s water quality.

EEA WISE – WFD 2022 (3rd RBMP), © EEA, CC BY 4.0