Module 3
Catchment - Scale Controls on River Geomorphology
Logan River Watershed (a 10 digit HUC)
Embedded Files
⬇️A longitudinal profile graph (distance (meters) vs. elevation (meters) by pulling a elevation profile of the Logan River from Franklin basin (around 42.0353,-111.599127 down to mouth (around 41.741216, -111.938460).
⬇️A longitudinal profile graph (distance (meters) vs. elevation (meters) by pulling a elevation profile of the Logan River from Franklin basin (around 42.0353,-111.599127 down to mouth (around 41.741216, -111.938460).
Knick points are shown above by blue arrows ⬆️
Knick points are shown above by blue arrows ⬆️
Distance: 45,700m, Elevation: 1605m—At this knick point, the elevation profile seems off due to the river underneath the hill and the hill elevation being recorded instead of the rivers.
Distance: 36500m, Elevation:1528m — the third dam is located at this knick point.
Distance: 35200m, Elevation: 1512 m—At this knick point, it seems there is a campground on the river left and a parking lot a couple of meters ahead on the river right, which the infrastructure could have caused.
Distance: 34000m, Elevation:1512m — The Second dam is located here at this knick point.
Distance: 30,800m, Elevation:1431m — The First Dam is located at this knick point.
- What is the base-level control of Logan River today (the feature and its elevation)?
4206ft Great Salt Lake
Used google earth pro and selected at the entrance of the Bear River to the Great Salt Lake.
- What was the base-level control of the Logan River about 18,000 years ago (feature and elevation)?
5000 ft Lake Bonneville
- What is the mainstem length of the Logan River in kilometers?
82 km
The concavity
The concavity
CATCHMENT MORPHOMETRICS
CATCHMENT MORPHOMETRICS
For the Logan River Watershed
For the Logan River Watershed
The catchment length in meters
The catchment length in meters
The catchment area in square meters and in square kilometers
The catchment area in square meters and in square kilometers
The catchment perimeter length in meters and kilometers.
The catchment perimeter length in meters and kilometers.
172,404.1 m = 172.4041 km
Calculated using the calculate geometry tool on the Logan Rivers Watersheds field titled shape_length, set the property to perimeter length and length unit to meters.
The circularity ratio
The circularity ratio
The elongation ratio
The elongation ratio
The form factor of the Logan River Watershed
The form factor of the Logan River Watershed
The catchment relief of the Logan River Watershed
The catchment relief of the Logan River Watershed
The relief ratio of the Logan River Watershed
The relief ratio of the Logan River Watershed
The drainage density of the Logan River perennial drainage network
The drainage density of the Logan River perennial drainage network
The drainage pattern of the Logan River drainage network is Dendritic
The drainage pattern of the Logan River drainage network is Dendritic
⬆️Above is a figure demonstrating stream order
⬆️Above is a figure demonstrating stream order
STREAM ORDER
STREAM ORDER
For the perennial drainage network of the Logan River:
The stream order of the Logan River at its mouth. 5
The stream order of Temple Fork at its mouth. 3
The stream order of Beaver Creek. 1
⬇️Below are maps of the drainage network, in blue is the perennial drainage network with stream names.
Does the Logan River appear to obey the Hortonian laws of stream network composition?
Does the Logan River appear to obey the Hortonian laws of stream network composition?
It does as there are relatively more first-order streams than second-order and third-order streams, so the number of streams decreases as a stream order increases. Also, the average length of streams increases when stream order does. Lastly, the high-order stream drainage areas are larger than the small-order stream drainage areas. Logan River being in line with Hortonian laws of streams network means that the drainage network for the Logan River has a more natural and organized drainage network.
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