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Saint Maries River in Idaho

River46.4 mi
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Around here

Around Saint Maries River

Shadowy St. Joe Campground7.1 mi5 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)

About this river

Saint Maries River is a 46.4 mile river. Streamflow is measured at the USGS gauge ST Maries River near Santa, ID (site 12414900). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1966 to 2026

Saint Maries River typically runs highest in April, at a median 724 cfs, and lowest in September, at 54 cfs. The highest flow on record for any single day is 10,800 cfs, in 1996.

Show the numbers
Typical flow by month at ST Maries River near Santa, ID, in cfs
MonthTypical (cfs)Usual range (cfs)
January205107 to 424
February293157 to 569
March614359 to 916
April724484 to 1,130
May591350 to 916
June250162 to 444
July10177 to 148
August6046 to 74
September5443 to 67
October6051 to 75
November9669 to 144
December12078 to 220

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 60 years of record. Statistics published by the US Geological Survey for ST Maries River near Santa, ID (site 12414900). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

2 mapped launches sit in the mapped area of Saint Maries River. Ramp data comes from the USGS national boat-ramp inventory.

  • St. Maries RiverSt. Maries RiverPublic
  • First StreetSt. Joe RiverRestricted

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Put Saint Maries River on your wall

This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.

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