United States Bureau of Land Management · Public domain
The cut
532 metres, to scale.
A slice through Leslie Gulch where it is deepest and narrowest, measured on the Copernicus relief model every 30 m. Same scale as the landmark standing on the floor.
Standing on the floor, to scale: Great Pyramid · 139 m · Empire State · 443 m
Depth is measured to the lower rim; the width is from rim to rim. A 30 m relief model smooths the narrowest walls, so a slot canyon reads shallower than it is.
532m
Depth
measured on the 30 m relief model
7.7km
Rim to rim
measured on the 30 m relief model
31°
Steepest wall
average over 300 m, from the relief
802m
Floor altitude
Rim to floor
4 °C warmer at the bottom.
In July the afternoon reaches 36 °C on the floor, against 32 °C on the rim. The best months to hike are from April to May and in October. The floor passes 35 °C in July: walk at dawn and carry water. The rim freezes at night from November to March. The wettest months are in December.
- 5°1°Jan
- 8°4°Feb
- 14°10°Mar
- 18°14°Apr
- 24°20°May
- 29°25°Jun
- 36°32°Jul
- 34°30°Aug
- 28°24°Sep
- 19°15°Oct
- 10°7°Nov
- 5°1°Dec
Afternoon highs, 1991–2020 averages (NASA POWER) brought to the altitude of the rim and of the floor with the standard lapse rate (6.5 °C per 1 000 m). Shade, wind and rock change this on the day. Not a forecast.
Canyon in Malheur County, Oregon, United States of America
Leslie Gulch is a canyon in United States, cut by the Owyhee River. The relief model measures 532 m from the floor to the lower rim. Rim to rim it is 7.7 km wide where the cut was taken.
Getting there.
- Boise Air Terminal/Gowen Field (BOI)nearest airport with scheduled flights · 93 km in a straight lineCar hire at BOI airport (Boise)Discover Cars · sponsored link↗
- From April to May and in Octoberbest months to hike (estimate)
Plan the visit
Guided hikes, a bed nearby, 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 river
The Owyhee River runs highest from February to May.
The Owyhee River carries about 30 m³/s on average here. It runs highest from February to May. It is lowest from July to October.
- 74 m³/sJan
- 101 m³/sFeb
- 124 m³/sMar
- 118 m³/sApr
- 102 m³/sMay
- 60 m³/sJun
- 29 m³/sJul
- 4.4 m³/sAug
- 1.2 m³/sSep
- 14 m³/sOct
- 31 m³/sNov
- 57 m³/sDec
From about 1.2 m³/s in the lowest month to 124 m³/s in the highest. Its basin above this point covers 25,122 km².
The Owyhee River from source to mouth on Riveryas — coming soon
Estimate: long-term flow from the HydroATLAS model (WaterGAP, 1971–2000) shaped by the monthly rain, snow and temperature of the area (NASA POWER). Dams change it. Not a forecast.
From the sky.
The canyon from above, with the relief shaded, the line of the cut, the river and what people have mapped around it.
N
4 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 17 × 17 km, north up. The line is the cut above. Points © OpenStreetMap contributors.
Around the canyon.
- 1rafting, canoe, kayak or canyoning spots within 4 km
- 1campsites within 8 kmSlocum Creek Campground
- viewpoints within 5 km
- marked hiking routes within 4 km
- via ferrata routes within 4 km
- climbing crags within 3 km
- footbridges and suspension bridges within 3 km
- swimming spots within 3 km
- named waterfalls within 4 km
- caves within 3 km
- car parks within 3 km
- information boards and visitor centres within 4 km
- bus stops within 2 km
- hotels and guesthouses within 8 km
- restaurants and cafés within 4 km
Counted in OpenStreetMap, the map anyone can edit, around the floor of the canyon. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
In our other atlases
What else is around Leslie Gulch.
The river that carved it, the waterfalls inside it, the mountains on the rim, the lakes, beaches and island nearby — from our six sister atlases, each with its own figures.
Riveryas1 rivers in the canyon
Peakyas13 mountains within 15 km
Lakeyas1 lakes within 15 kmComing soonFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, NOAA, OpenStreetMap). Links open when each site is online.
Month by month
The weather, at the floor and at the rim.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon · floor | 5 | 8 | 14 | 18 | 24 | 29 | 36 | 34 | 28 | 19 | 10 | 5 |
| Afternoon · rim | 1 | 4 | 10 | 14 | 20 | 25 | 32 | 30 | 24 | 15 | 7 | 1 |
| Night · rim | -8 | -6 | -3 | 0 | 5 | 9 | 15 | 14 | 9 | 2 | -4 | -7 |
| Rain (mm) | 32 | 23 | 30 | 27 | 36 | 22 | 7 | 6 | 12 | 21 | 26 | 42 |
| Rainy days | 9 | 7 | 8 | 8 | 8 | 6 | 2 | 2 | 3 | 5 | 8 | 10 |
| Sun hours/day | 3.4 | 5.2 | 6.8 | 8.9 | 10.3 | 12.0 | 13.2 | 11.7 | 9.9 | 7.6 | 5.0 | 2.9 |
| Snow on the ground (cm) | 17 | 13 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 15 |
| Afternoon · floor | Afternoon · rim | Night · rim | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 5 | 1 | -8 | 32 | 3.4 |
| Feb | 8 | 4 | -6 | 23 | 5.2 |
| Mar | 14 | 10 | -3 | 30 | 6.8 |
| Apr | 18 | 14 | 0 | 27 | 8.9 |
| May | 24 | 20 | 5 | 36 | 10.3 |
| Jun | 29 | 25 | 9 | 22 | 12.0 |
| Jul | 36 | 32 | 15 | 7 | 13.2 |
| Aug | 34 | 30 | 14 | 6 | 11.7 |
| Sep | 28 | 24 | 9 | 12 | 9.9 |
| Oct | 19 | 15 | 2 | 21 | 7.6 |
| Nov | 10 | 7 | -4 | 26 | 5.0 |
| Dec | 5 | 1 | -7 | 42 | 2.9 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the floor (802 m) and the rim (1,401 m) with the standard lapse rate. Not a forecast.
Photographs
Seen from the trail.
Recent years
Wet years, dry years.
Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 136% | 66% | 98% | 52% | 154% | 259% | 82% | 66% | 8% | 50% | 147% | 42% |
| 2021 | 101% | 177% | 32% | 51% | 61% | 74% | 132% | 134% | 130% | 167% | 78% | 98% |
| 2022 | 74% | 26% | 34% | 146% | 106% | 162% | 4% | 215% | 38% | 61% | 125% | 162% |
| 2023 | 79% | 48% | 256% | 84% | 143% | 224% | 13% | 620% | 75% | 94% | 99% | 111% |
| 2024 | 258% | 177% | 148% | 108% | 94% | 68% | 74% | 66% | 135% | 77% | 217% | 200% |
| 2025 | 98% | 386% | 90% | 51% | 63% | 28% | 351% | 272% | 152% | 130% | 62% | 153% |
130% or more: wet month 70% or less: dry month
Compare with the neighbours.
Leslie Gulch
United States
- 532 mDepth
- 7.7 kmRim to rim
- —Length
- 31°Steepest wall
Snake River Canyon
United States · 248 km
- 168 mDepth
- 2.8 kmRim to rim
- —Length
- 27°Steepest wall
Where these figures come from
| Name, type, published depth and length | Wikidata (Q6530855) · CC0 |
|---|---|
| The cut: depth, width, wall and 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| River flow and basin | HydroATLAS / RiverATLAS v1.0 (Linke et al. 2019) · CC BY 4.0 |
| Climate | NASA POWER, 1991–2020 |
| Viewpoints, trails, bridges and the river line | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Rivers, waterfalls, mountains, lakes, beaches and islands nearby | Coastya, Lakeyas, Peakyas, Cascadyas, Islandyas, Riveryas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
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