# Streamflow

Topics: Speed of light, Velocity, Measurement Pages: 7 (1508 words) Published: January 22, 2013
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1.0 IntroductionPg 1
1.1 Figure 1 Pg 1
2.0 Materials and MethodsPg 2
2.1 Site descriptionPg 2
3.0 ResultsPg 3-8
3.1 Table 1Pg 3
3.2 Table 2Pg 5
3.3 Table 3Pg 7
4.0 DiscussionPg 9
5.0 ConclusionPg 10

1.0 Introduction
The purpose of this field exercise was to find the total discharge of the Dunk River in Newton, Prince Edward Island on November 14th 2012. Discharge is the volume of water moving down a stream or river per unit of time, commonly expressed in cubic feet per second. The up-stream and downstream cross-sections were setup using a tape measure and stakes. There were 21 cross-sections in measured intervals. A current meter was used to measure velocity at the same location as each depth measurement at each cross-section that was determined. Also used was the float-Method, a length of stream was measured, and a start and finish points were sectioned off. Then a float was used to measure how long it took to get from start line to the finish line. Water samples were also taken, and were tested for, conductivity, PH levels and Turbidity.
Figure [ 1 ].1: Current meter

Page 1
2.0 Materials and Methods
The methods that were used for this procedure “The Measurement of stream flow” can be referenced in the Hydrometric Field Manual – Measurement of Stream flow, Terzi 1981. Equipment used:
* Meter stick
* 3 Tape measure
* 4 Stakes
* Rod
* Current meter (Teledyne Gurley Model 1100)
* Surveyors Level (Topcon Model ATF6)
* 2 stopwatches
* Tripod
* Water sample bottle
* Ph meter
* Turbidity Meter
* Conductivity meter

2.1 Site Description
On November 14th, 2012 stream flow measurements were taken on the Dunk River in Newton, PEI .The GPS coordinates are 63°36’40” W longitude and 46°20’28” N latitude. The water was brown and cloudy. There was heavy vegetation on either bank of the stream. The riverbed was rocky in places and sandy in others. The weather conditions at the stream that day were cloudy and 6 degrees. The measurements taken were about 100 yards from the road.

Page 2
3.0 Results

This Table has the current meter results and the mid-section calculations. Table # 1
Current Meter Results With Mid-Section Calculations|
Section #| Width (m)| Surveyed Depth (m)| Velocity (m/s)| Water Depth (m)| 0.4 Times Water Depth (m)| Mid Section| 0| 0.00| 2.00| 0.00| 0.00| 0.00| 0.00| 1| 0.29475| 2.22| 0.24| 0.22| 0.088| 0.0233442|

2| 0.88425| 2.39| 0.32| 0.39| 0.156| 0.0735696|
3| 1.47375| 2.47| 0.40| 0.47| 0.188| 0.110826|
4| 2.06325| 2.46| 0.40| 0.46| 0.184| 0.108468|
5| 2.65275| 2.43| 0.48| 0.43| 0.172| 0.1216728|
6| 3.24225| 2.44| 0.48| 0.44| 0.176| 0.1245024|
7| 3.83175| 2.51| 0.56| 0.51| 0.204| 0.1683612|
8| 4.42125| 2.55| 0.48| 0.55| 0.22| 0.155628|
9| 5.01075| 2.55| 0.40| 0.55| 0.22| 0.12969|
10| 5.60025| 2.52| 0.48| 0.52| 0.208| 0.1471392|
11| 6.18975| 2.43| 0.40| 0.43| 0.172| 0.101394|
12| 6.77925| 2.40| 0.40| 0.4| 0.16| 0.09432|
13| 7.36875| 2.37| 0.32| 0.37| 0.148| 0.0697968|
14| 7.95825| 2.37| 0.32| 0.37| 0.148| 0.0697968|
15| 8.54775| 2.33| 0.24| 0.33| 0.132| 0.0466884|
16| 9.13725| 2.34| 0.24| 0.34| 0.136| 0.0481032|
17| 9.72675| 2.33| 0.24| 0.33| 0.132| 0.0466884|
18| 10.31625| 2.37| 0.16| 0.37| 0.148| 0.0348984|
19| 10.90575| 2.23| 0.08| 0.23| 0.092| 0.0108468|
20| 11.49525| 2.09| 0.08| 0.09| 0.036| 0.0031833|
21| 11.79| 2.00| 0| 0| 0| 0|
| | | | | Total Mid Section:| 1.6889175|

Mid-section calculations
1. Multiply the velocity of the section by the depth of the section. 2. Find the difference of the width between sections Two and section...