# Calculating slope length using LS-tool

Geographic Information SystemsContents:

## How do I find the length of a slope?

The slope length is calculated using the Pythagorean Theorem, where the vertical distance is the rise and the horizontal distance is the run: **rise ^{2} + run^{2} = slope length^{2}**.

## How do you calculate LS in usle?

Choose the crop type factor and tillage method factor for the crop to be grown. Multiply these two factors together to obtain the C factor. Select the P factor based on the support practice used (Table 5). Multiply the 5 factors together to obtain the soil loss per hectare (acre).

## What is slope length factor?

L is the slope length factor, **representing the effect of slope length on erosion**. It is the ratio of soil loss from the field slope length to that from a 72.6-foot (22.1-meter) length on the same soil type and gradient.

## How do you measure slope in Arcgis?

Click the Spatial Analyst dropdown arrow, point to Surface Analysis, and click Slope. Click the Input surface dropdown arrow and click the surface for which you want to calculate the slope. Choose the Output measurement units.

## How do you calculate ramp length and slope?

**Slope expressed as a percentage = (h/d) x 100**

An existing ramp of 1 meter in height with a horizontal distance of 10 meters, will have a slope of 10%.

## What is the formula for calculating length?

Learn how to find the distance between two points by using the distance formula, which is an application of the Pythagorean theorem. We can rewrite the Pythagorean theorem as **d=√((x_2-x_1)²+(y_2-y_1)²)** to find the distance between any two points.

## How do you calculate ES EF LS and LF?

To calculate ES, LS and S with the following formula **EF = ES + t LF = LS + t- S = LS-ES or S = LF-EF** 7 In the Table 3 there are two non-critical work is the activity of two preparation tools mixer and the preparation of machine tools, meaning that in the activity there is a slack time of 3.8 hours.

## How do you identify ES EF LS and LF?

**ES vs EF vs LS vs LF-Difference between activity ES,EF, LS,LF**

- Early Start or ES is the earliest time that activity can start.
- Early Finish or EF is the earliest time that activity can finish.
- Late Start or LS is the latest time an activity can start.
- Late Finish or LF is the latest time that an activity can finish.

## What is topographic factor LS?

Quote from video:

## What is the formula for slope?

y = mx + b

The slope intercept formula **y = mx + b** is used when you know the slope of the line to be examined and the point given is also the y intercept (0, b). In the formula, b represents the y value of the y intercept point.

## How do you calculate the length of a line?

**How do I find the length of a line segment with endpoints?**

- Use the distance formula: d = √[(x₂ – x₁)² + (y₂ – y₁)²]
- Replace the values for the coordinates of the endpoints, (x₁, y₁) and (x₂, y₂) .
- Perform the calculations to get the value of the length of the line segment.

## Can you find distance with slope?

CALCULATING HORIZONTAL DISTANCE

**Divide both sides by slope percent**. run = (rise × 100 ) / slope % is a measure of horizontal distance.

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