Table of Contents
How do you measure freshwater?
For water that is in motion, cubic feet per second (cfs) is the unit of measure. For water that is stored or impounded, the acre-foot (af) is how water is measured. Cubic feet per second (cfs): * 1 cubic foot = 7.4805 gallons.
What is the area of lake?
Definitions for lake range in minimum sizes for a body of water from 2 hectares (5 acres) to 8 hectares (20 acres) (see also the definition of “pond”). Charles Elton, one of the founders of ecology, regarded lakes as waterbodies of 40 hectares (99 acres) or more.
What is the depth of lake?
Lakes ranked by maximum depth
| Name | Depth | |
|---|---|---|
| (meters) | ||
| 1. | Baikal | 1,642 |
| 2. | Tanganyika | 1,470 |
| 3. | (Caspian Sea) | 1,025 |
What is used to measure the depth of water?
echo sounder
depth finder, also called echo sounder, device used on ships to determine the depth of water by measuring the time it takes a sound (sonic pulse) produced just below the water surface to return, or echo, from the bottom of the body of water.
How do you test for water?
DO is measured using a dissolved oxygen meter (or DO meter). The best method is to take the measurement in the field at the same time each day, because DO concentrations can vary throughout a 24 hour period.
How is the width of a lake measured?
Width (W) is measured as the maximum distance at a right angle to L. The fetch often determines the maximum size of waves and how deep a lake mixes. The length of a lake is measured as the longest straight-line shoreline-to-shoreline distance across a lake.
How can you tell the shape of a lake?
Common lake shape measurements other than length (fetch) and width include the maximum depth, the average depth, and the relative depth, which is a ratio of the maximum depth the to the lake’s diameter. Typically, the maximum depth of the lake can be found at roughly central location or at some distance from the shoreline.
How is the fetch of a lake measured?
The fetch, or the maximum distance an airmass travels across a lake, can be measured along the length (L) of a lake. Width (W) is measured as the maximum distance at a right angle to L. The fetch often determines the maximum size of waves and how deep a lake mixes.
Lakes can vary in three dimensions: length, width, and depth. The shape and volume of a lake, referred to as lake morphology, often relates to a lake’s age, origins, chemical makeup, and the organisms that live within it. Lake shape is influenced by the surrounding landscape and controls much of what goes on physically and biologically underwater.