The asthenosphere and lithosphere are parts of Earth’s

The variety of plant and animal life supported by given habitat is defined as the level of

n200080 [17]

The defined as the level of biodiversity

5 0

3 years ago

a rural kansas watershed that is ungauged has an area of 475 acres and a main channel length of 6870 feet with an average slope

dlinn [17]

Answer:

$\mathbf{Q_p =682 \ \ ft^3/s}$

Explanation:

Given that:

Area = 475 acres

The length of the channel (L) = 6870 feet

The average water shield slope (S) = 100 feet/mile

Since; 1 mile = 5280 feet

Burst duration D = 15 min

∴

100 feet/mile = 100/5280

The average water shield slope (S) = 5/264

Using hydrograph method:

The time of concentration $t_c = 0.0078L^{0.77} S^{-0.385}$

where;

L = 6870

S = 5/264

$t_c = 0.0078(6870)^{0.77} (\dfrac{5}{264})^{-0.385}$

$t_c =32.34$ min

Since 60 min = 1 hour

32.34 min will be (32.34*1)/60

= 0.539 hour

Lag time $T_l = 0.67\times t_c$

$T_l = 0.67\times 32.34$

$T_l = 21.6678\ min$

The time to peak i.e

$T_p = \dfrac{D}{2}+ T_L \\ \\ T_p = \dfrac{15}{2}+ 21.6678 \\ \\ T_p = 29.168 \ min$

$T_r = \dfrac{T_p}{5.5} \\ \\ T_r = \dfrac{29.1678}{5.5} \\ \\ T_r = 5.30 \ min$

Since D = 15 min is not equal to $T_r$ , then we hydrograph apart from $T_r$ duration lag time.

Then;

$T_p \ ' = T_p + \dfrac{D-t_r}{4} \\ \\ T_p \ ' = 29.168 + \dfrac{15-5.30}{4} \\ \\ T_p \ ' = 31.593$

Now, we need to determine the peak discharge $Q_p$ by using the formula:

$Q_p = \dfrac{484 \times A}{T_p \ '}$

where

484 = peak factor

Recall that A = 475 acres, to miles, we have:

A = 0.7422 mile²

$T_p \ ' = 31.593/60$

∴

$Q_p = \dfrac{484 \times 0.7422}{\dfrac{31.593}{60}}$

$\mathbf{Q_p =682 \ \ ft^3/s}$

7 0

3 years ago

The city of Iquitos, also called the "St. Louis of the Amazon," developed in

ZanzabumX [31]

The answer is C. Rubber. Iquitos profited greatly from the boom of the rubber industry, beginning in the 1900s.

3 0

3 years ago

List 3 other federal agencies that have an impact on our wildlife resources

solmaris [256]

Bureau of Land Management, Fish and Wildlife Service, Forest Service, and National Park Service

8 0

3 years ago

Match the term in column 1 to the characteristics in column 2.

REY [17]

The term in the column 1 that match to the column 2 are as follows:-

Ice sheet - Size of a continent
Erratic - Boulder or rock dropped by glaciers
Deforestation - Increases erosion
Glacier - Carves away the land

<h3>What is Deforestation?</h3>

Deforestation refers to the cutting down of the trees in the large quantity, which can lead to the environmental issues such as erosion of soil, flooding, loss of habitats etc. It leads to the increase in the level of the erosion as the soil loses it holds.

Ice sheet is a continental glacier in the polar region of the earth which contains 99% of the freshwater.

Erratic refers to a rock or boulder that stands out from the surrounding rocks and is said to have been transported there by glaciers.

Glacier are collection of the ice, rock and other sediments carves away the land.

Learn more about Deforestation here:

brainly.com/question/11697527

#SPJ1

3 0

1 year ago