Test+16+-+Stream+Flow

﻿Stream Flow: Stream flow is the measurement of how much water is flowing by everday in our streams. And how fast it is flowing by.Stream flow, or discharge, is the volume of water flowing in a stream channel expressed as unit per time (cfs = cubic feet per second). Stream flow is an important determinant of water quality and aquatic habitat conditions. High water temperature, low levels of dissolved oxygen, and deleterious levels of toxins can all be exacerbated by low stream flow.. = How to test stream flow: = =Step 1: Selecting the Channel Location= =The area to be monitored should be a stable stream channel or at least not significant alteration. The portion of the stream to monitor should not be a braided section of the stream or an meander area. If possible, the section to be monitored should have flow that is parallel to the stream channel orientation and not within a pool area or other area.= =Step 2. Developing a Cross-Section of the Site and Establishing a Reference or Staff Gauge= =These methods utilize a velocity-area approach to measuring stream flow.= =Step 3. Measuring Interval and Depth= =Monitors measure the area of the stream at their site by measuring the width across the stream and the depth at several locations across the measured width. For a small stream, the width interval between measurements is typically 6 inches. For larger streams, intervals of 1 - foot can be used.=

Stream: _ Time of day: __Site name:__ Student name: Site number: _ Student name: Date: ___ Student name:__ __ || || || ||||||||||||||  Site 1
 * Site 2  ||
 * A  ||   Width   ||   (m)   ||||||||||||||   ||||||||||||||||   ||
 * ||  ||   ||   1   ||   2   ||   3   ||   4   ||   5   ||   6   ||   7   ||   1   ||   2   ||   3   ||   4   ||   5   ||   6   ||   7   ||   ||
 * B  ||   Distance   ||   (m)   ||   0   ||   ||   ||   ||   ||   ||   ||   0   ||   ||   ||   ||   ||   ||   ||   ||
 * C  ||   Depth   ||   (m)   ||   0   ||   ||   ||   ||   ||   ||   0   ||   0   ||   ||   ||   ||   ||   ||   0   ||   ||
 * D  ||   Cross-sectional area   ||   (m2)   ||||||||||||||   ||||||||||||||||   ||
 * ||  ||   ||   1   ||   2   ||   3   ||   4   ||   5   ||   6   ||   7   ||   1   ||   2   ||   3   ||   4   ||   5   ||   6   ||   7   ||   ||
 * E  ||   Flow velocity   ||   (m/s)   ||  —  ||   ||   ||   ||   ||   ||  —  ||  —  ||   ||   ||   ||   ||   ||  —  ||   ||
 * F  ||   Average velocity   ||   (m/s)   ||||||||||||||   ||||||||||||||||   ||
 * G  ||   Stream flow   ||   (m3/s)   ||||||||||||||   ||||||||||||||||   ||
 * (Optional) Convert Stream flow to cubic feet per second  ||
 * H  ||   Stream flow   ||   (ft3/s)   ||||||||||||||   ||||||||||||||||   ||