River
Nidelva
30 km from source to mouth · Norway.
NorwayFlows into Trondheimsfjord
In numbers
Length
30km
Average flow
84m³/s
Basin
3,118km²
Drop
134m
from 140 m to 6 m
Country
1
The journey
From source to mouth
30 km of river and 31 stops on the way: 1 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSelbusjøenat 140 m
- 0 kmGrytfossen
- 5 kmSelbusjøen58 km²
- 9 kmTrongfossen
- 9 kmTrongfossbrua
- 10 kmHyttfossen
- 11 kmSpringfossbrua
- 12 kmSvean bru
- 16 kmTanemsbrua
- 17 kmFjæremsfossen
- 20 kmTillerbrua
- 23 kmLeirfossen,øvre
- 23 kmØvre Leirfoss
- 23 kmLeirfossan
- 24 kmNedre Leirfoss
- 24 kmNedre Leirfossen
- 26 kmKroppanbrua East
- 26 kmKroppanbrua West
- 26 kmSluppen Bridge
- 26 kmNydal bridge
- 28 kmStavne bridge
- 28 kmCeciliebrua
- 29 kmElgeseter Bridge
- 29 kmOld Town Bridge
- 29 kmGangbrua
- 29 kmBakke bridge
- 30 kmNidareid bru
- 30 kmVerftsbrua
- 30 kmNidelv road bridge
- 30 kmNidelv railway bridge
- 30 kmPirbrua
- 30 kmTrondheim198,777 people
- 30 kmTrondheimsfjordat 6 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Trøndelag, Norway
At the mouth it carries 84 m³/s on average: an Olympic pool every 30 seconds. It drops from 140 m to 6 m, 4.5 m per kilometre on average. Its basin covers 3,118 km², about the size of LU. 55,000 people live in it. Highest water, with the snowmelt: April; lowest: from December to March. Dams and reservoirs hold back a large share of its water (30% of a year's flow).
Where to start
- TrondheimLargest city on its banks · 198,777 people
- Trondheim Airport, Værnes (TRD)Nearest airport with scheduled flights, 26 km from the cityCar hire at TRD airport (Trondheim)Discover Cars · Affiliate link↗
- On the water7 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From June to AugustThe best months to visit
Nidelva, month by month
Highest water: April
Lowest water: from December to March. Melting snow makes up much of its water. Best months to visit: from June to August.
From about 29 m³/s in the lowest month to 200 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.
Plan the trip
Plan the trip: boat trips, a bed by the river, a car
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
The basin
Nidelva: the basin in numbers
3,083 km² of land send their water to this river. This is what lives on it.
- 55,000people live in the basin
- 18/km²people per km²
- 650maverage altitude of the basin
- 781mmof rain a year (basin average)
- 0.9°Caverage air temperature
- 18%protected areas
- 6.5%covered by lakes
- 1%permafrost
- 0.8km³held in reservoirs
What covers the basin
- 52% Forest
RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.
Along the river
Nidelva: what you find on the way
- 4Weirs
- 6WaterfallsTrangfossen, Nordsetfossen and 4 more
- 1Boat ramps
- 4Ferry piersRavnkloa, Trondheim hurtigbåtterminal, Trondheim and 1 more
- 2MarinasØya, Skansen Marina
- 1River beachesBadetrappen
From OpenStreetMap, within 1.5 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Nidelva in our other atlases
What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.
7waterfalls on the riverCascadyas
1lake on its wayLakeyas
377mountains at the sourcePeakyas
3islands off the mouthIslandyas
Waterfalls (7)
On the river, by Cascadyas
- Grytfossenkm 0
- Trongfossenkm 10
- Hyttfossenkm 10
- Fjæremsfossenkm 17
- Leirfossen,øvrekm 23
- Leirfossankm 24
- Nedre Leirfossenkm 24
Cascadyas is coming soonOpen Cascadyas ↗
Lakes and reservoirs (1)
Lakes it flows through, by Lakeyas
- Selbusjøenkm 558km²
Lakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (377)
Within 15 km of the source, by Peakyas
- Vassfjellet8.6 km away · prominence 510 m710m
- Kråkfjellet12 km away · prominence 231 m817m
- Vassfjellvarden8.6 km away640m
- Frøkenvarden8.7 km away600m
- Sandafjellet7.3 km away
- Kastbrekkhaugan14 km away
- Komferhaugan7.6 km away
- Finnsvean6.1 km away
369 more on PeakyasOpen Peakyas ↗
Islands off the mouth (3)
Within 30 km of the mouth, by Islandyas
- Munkholmen2.3 km away0.0km²
- Tautra20 km away1.5km²
- Brattøra1.9 km away0.5km²
Islandyas is coming soonOpen Islandyas ↗
From space
The source and the mouth, seen from orbit


Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.
Photos
Nidelva in pictures
Nearby
Rivers nearby
Where these numbers come from
| Name, length, places | Wikidata (Q499668) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Our other atlases | Cascadyas, Lakeyas, Peakyas, Islandyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST |
Every source and licence is on the data sources page.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.



