Period1F

=//In order for a river to be clean the water should be clear. There should be none or very little pollution in the water and there should be no unatural chemicals in the water. River Hypothesis at beginning- We think the river is clean enough to walk in, but not to drink.//=

Spot 1 is under the bridge. We do not think that this water is clean enough to drink because there is litter like cigarrette butts and plastic cups in it. But we think it is clean enough to walk through because the water itself is clear and there is not too much litter. It would help to do a chemical test here and see what types of animals live in this area of the river.
 * __Spot 1__-**
 * Flow rate-** 0.145 meters per second
 * PH strip color-** 7-8 Green
 * Tempature**- 19.8 degrees celcius
 * Depth**- .5in-1.5in-1in
 * Turbidity-** -10.6 NTU
 * Precision PH**- 1

Spot 2 by the black pipe. This spot has a point source. We think that this spot is less clean than Spot 1. Water is coming out of the black pipe and into the river. There is green-yellow foam in the pipe. A redish-shiny-oil like substance is coming out of the pipe. Bugs seem to be attracted to this pipe more than any other place on the river. We should test the yellow foam and shiny substance to see if it is natural or not.
 * __Spot 2__-**
 * Flow Rate-** 0.102 meters per second
 * PH strip color-** 6 yellow
 * Temperature**-20.1 degrees celsius.
 * Depth**- .5in-2in-.5in
 * Turbidity-** -35.2 NTU* see below.
 * Precision PH-** 8

Spot 3 is behind the home team bleachers and in front of the playground. Spot 3 is a deposition zone. The water here is not clean enough to drink because there is sand and other things floating here. There was also a soda can and a plastic cup in the water. It has to be pretty clean though because we can see small fish living in the area.
 * __Spot 3__-**
 * Flow Rate**- 0.13 meters per second
 * PH strip color**- 6 Green
 * Temperature**- 21.3 degrees celsius.
 * Depth**- 1in-5.5in-.5in
 * Turbidity**- 3.6 NTU* see below
 * Alkalinity-** 140 ppm
 * Nitrate-** number 0
 * Phosphate-** 0.7
 * Precision PH-** 7.5


 * __Test Descriptions__**
 * PH test- in this test we put a PH strip in the deepest part (center) of the river and record its color
 * temperature- in this test we hold a thermometer under the water to record it's temperature
 * depth- in this test we measure the spot with a yard stick at three places; one on the left, one in the middle, and one on the right
 * turbidity- in this test we measure the cloudiness of water by placing the sample into the the turbidity tester which shines light through it and the more light that passes through, the cleaner the water . In the turbidity test it is measured in NTU. NTU stands for Nephelometric Turbidity Unit. The unit of measurment meaurses the cloudyness of the water/ or the amount of parrticals in the water. The higher the number you get when conducting this test the more cloudy the water is that you are testing.
 * flow rate-in this test we hold the flow rate stick perpendicular to the river and read the reading off the blue handheld
 * alkalinity test- how much muriatic acid is in the sample of water
 * nitrate- how much nitrogen is in the water

After all our tests, we think that the river is clean. The majority of the river's PH is between 7-8 where it was supposed to be. This means that there is a good amount of acid in the river. Although one was a little low, it was not low enough to be harmful. Also we saw fish swimming, especially by spot 3 where the water is the deepest. The tempatures if the three spots are similar which means that water flows well. Although two of our turbidity were incorrect because they were negative numbers, our first turbidity that was not a negative number (spot 3) seemed that it was a low enough number that light could pass through it so it wasn't very cloudy.
 * __Conclusion__**


 * ***These negatives number are not correct or reliable. We made a mistake while doing the Turbidity. We learned that we need to make sure that the veil is COMPLETLY dry. We did attempted to dry them but did not successfully dry them all the way. Since the veil was not completly dry it also made the inside of the machine we put it in wet which as we saw very much effected the outcome of out results.