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River

James River

1,143 km from source to mouth · United States.

United StatesUnited StatesFlows into Missouri River

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

1,143km

Average flow

18m³/s

Basin

53,491km²

Drop

422m

from 772 m to 350 m

Country

1

The journey

From source to mouth

1,143 km of river and 11 stops on the way: 4 towns and cities on its banks, dams, bridges and the tributaries that feed it.

772 m350 m
Nebraskaat 772 m0 km
Lake Tschida10 km²132 km
Mandan21,382 people250 km
Lake Robinson0.4 km²300 km
Lake Oahe1,093 km²635 km
Lake Sharpe228 km²772 km
Lewis and Clark Lake85 km²1,053 km
Missouri Riverat 350 m1,143 km
02505007501,0001,143 km
  1. 0 kmNebraskaat 772 m
  2. 32 kmEdward Arthur Patterson Lake1.8 km²
  3. 36 kmDickinson23,765 people
  4. 132 kmLake Tschida10 km²
  5. 250 kmMandan21,382 people
  6. 300 kmLake Robinson0.4 km²
  7. 635 kmLake Oahe1,093 km²
  8. 645 kmPierre14,091 people
  9. 772 kmLake Sharpe228 km²
  10. 1,053 kmLewis and Clark Lake85 km²
  11. 1,054 kmLake Yankton0.9 km²
  12. 1,061 kmYankton14,557 people
  13. 1,143 kmMissouri Riverat 350 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in North Dakota and South Dakota in the United States

At the mouth it carries 18 m³/s on average: an Olympic pool every 139 seconds. It drops from 772 m to 350 m, 0.4 m per kilometre on average. Its basin covers 53,491 km², about the size of BA. 1.4 million people live in it. Highest water: from June to July; lowest: from December to March. It is heavily dammed: reservoirs can hold 326% of a year's flow.

Read more on Wikipedia

Where to start

  • DickinsonLargest city on its banks · 23,765 people
  • Dickinson Theodore Roosevelt Regional Airport (DIK)Nearest airport with scheduled flights, 9 km from the cityCar hire in DickinsonDiscover Cars · Affiliate link
  • On the water98 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • From May to SeptemberThe best months to visit

James River, month by month

Highest water: from June to July

Lowest water: from December to March. Freezing months (average below −4 °C): from December to February. Best months to visit: from May to September.

540
-10°9 mmJan
400
-6°12 mmFeb
340
0°28 mmMar
1,400
8°50 mmApr
1,800
14°70 mmMay
2,100
20°82 mmJun
2,200
23°63 mmJul
1,500
22°51 mmAug
1,300
16°42 mmSep
1,100
9°30 mmOct
930
0°15 mmNov
720
-7°12 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 340 m³/s in the lowest month to 2,200 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

James River: the basin in numbers

706,392 km² of land send their water to this river. This is what lives on it.

DammedReservoirs can hold 326% of a year's flow: much of the river is a chain of lakes.
  • 1.4millionpeople live in the basin
  • 2/km²people per km²
  • 1,135maverage altitude of the basin
  • 402mmof rain a year (basin average)
  • 5.9°Caverage air temperature
  • 5%protected areas
  • 0.8%covered by lakes
  • 97km³held in reservoirs

What covers the basin

  • 14% Forest
  • 25% Cropland
  • 57% Pasture

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

James River: what you find on the way

  • 84DamsBelfield Railroad Dam, Dickinson Dam, Dickinson Dike Dry Dam and 81 more
  • 1Weirs
  • 94Boat rampsFox Island Boat Ramp, Little Heart Boat Ramp, Kimball Bottoms Boat Ramp and 91 more
  • 3MarinasLewis & Clark Marina
  • 1Boat rentalsAmerican Creek Recreation Area Kayak Rentals
  • 2River beachesPebble Beach, Hobie Cat Beach

From OpenStreetMap, within 2.9 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

James River 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.

  • 7lakes on its wayLakeyas
  • 3mountains at the sourcePeakyas

Lakes and reservoirs (7)

Lakes it flows through, by Lakeyas

  1. Edward Arthur Patterson Lakekm 321.8km²
  2. Lake Tschidakm 13110km²
  3. Lake Robinsonkm 2970.4km²
  4. Lake Oahekm 628 · 62 m deep1,093km²
  5. Lake Sharpekm 764228km²
  6. Lewis and Clark Lakekm 1,041 · 14 m deep85km²
  7. Lake Yanktonkm 1,0430.9km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (3)

Within 15 km of the source, by Peakyas

  1. Peck Hill8.3 km away875m
  2. Buck Hill5.8 km away
  3. Saddle Butte8.1 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

James River: satellite view of the source
The source14 km across
James River: satellite view of the mouth
The mouth115 km across

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

James River in pictures

James River in Jamestown, N.D
Finetooth · CC BY-SA 3.0
Invasive Carp eDNA Sampling on the James River in South Dakota (51442450577)
USFWS Mountain Prairie · Public domain
Invasive Carp eDNA Sampling on the James River in South Dakota (51442450662)
USFWS Mountain Prairie · Public domain

Where these numbers come from

Name, length, placesWikidata (Q1542610) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesLakeyas, Peakyas — 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.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit