Desmond's Watershed Blog Page

Water Quality Indicators
Desmond L Carrico
2017 - 05 -31


The water has to be just right in a body of water. If it is too cold the cold water fish will die and for all that fish kill to decompose it will take a lot of D.O (dissolved oxygen). Same for warm water fish. Increased plant growth from extra sunlight can also affect D.O. Even though photosynthesis creates D.O when all those plants die it will use up D.O when it decomposes.

Thermal pollution is how much humans change the temperature of the water. A big change can be very bad. The smaller the change the better.

Water quality
Temperature change between samples
excelent
0-4
good
5-9
fair
10-18
poor
18 or greater

Turbidity is another water quality indicator. Turbidity is how murky or cloudy the water is. You measure turbidity with a Secchi disk. Turbidity affects the temperature of the water because if the turbidity is high the water will be very cloudy and the particles will absorb sunlight causing a rise in temperature.

One last water quality indicator is fecal coliform. The more fecal coliform there is the higher chance there will be harmfull bacteria. Fecal coliform enters a body of water from untreated sewage discharge.

Humans affect all of these indicators. Boats stir up the water causing a rise in turbidity. If people dump untreated sewage discharge into bodies of water the amount of fecal coliform will increase. We change the temperature of the water by dumping warm from industrys.
Desmond L Carrico
Science blog
2017-05-01


In science we were doing a unit on water filters. At the end we did a test to see which material made the best filter. There were 4 groups, each one had a kind of water. Our kind of water was cornstarch water.The people in our group were me, Ethan, Nicholas, Trinity and Clare The filters we used were screen, sand/gravel ,and paper filter.

Our procedure for our filters was

Step 1 We cut the bottom off the two litter bottle
Step 2. We used a screw and a hammer to make a little hole in the cap
Step 3. We put about 45% of a 16 oz cup of gravel inside of the 2 liter bottle
Step 4. We put around 45% of a 16 oz of sand on top of the gravel in the 2 liter bottle,
Step 5. We took a bin sand and gravel and 5 coffee filters and a screen
Step 6. 4 cups 1 labeled sand and gravel, paper filter, and screen and combo
Step 7. We taped the bottles to the chair
Step 8.We put the cap with the hole in it on the bottle
Step 9. We put the materials that we were experimenting with in the bottle
Step 10.We poured the corn starch water in the bottle
Step 11. We switched the bottle cap
Step 12.We repeated 9-11 three more times using the other water filter

Some advantages and disadvantages of the filters were

Paper filter -Made of paper, easily rippable, it took out the color ,ti took 24 seconds to fill the cup 1/4 of the way.

Sand and gravel- The Sand and Gravel did not improve the clarity of the water. As the water went in the cup it became clear. After 15 seconds it then became dirty.

screen-Made of wire, gets out big objects, let's tiny objects pass through.
Phosphorus blog 
12/15/16

Some ways how phosphorus gets in a lake are . Through fertilizer , 49% of the phosphorus in lake champlain comes from Agriculture.17.1% comes from forest lands. 16.4% comes from stream erosion. And 14.4% comes from developed lands ( parking lots, roads both paved and unpaved , roofs and large athletic fields )Phosphorus is it fertiliser so that is why agriculture is such a big percentage of the phosphorus in lake champlain.Agricultural means the science or practice of farming, including cultivation of the soil for the growing of crops and the rearing of animals to provide food, wool, and other products.% or percentage means any proportion or share in relation to a whole.
Phosphorus blog 
12/15/16

This week(06 to 09) we set up our test. The question was, how does fertilizer concentration affect duckweed . My hypothesis was. I think if there is low concentration of fertiliser the plant will grow at a normal speed but the more fertiliser you put in the faster the duckweed grows to a point then it gets worse for the plant. Our procedure for setting up the test was,

#1 we put 11ml. of water in in a test tube .

#2 we added 1 small drop (0.05 ml.) of liquid fertilizer.

#3 we added about 4 duckweed plants

#4 then we counted the total frons

#5 we wrote the number of frons on the side of the jar
#6 we the test tubes near a window under our grow lamp

Hypothesis means a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation .Procedure means an established or official way of doing something.


Dissolved Oxygen Test
11/21/16

This week in science we did an experiment to test the oxygen level of cedar lake and our fish tank. The question we came up with is ,what is the oxygen level of cedar lake? Is it in the healthy range? My hypothesis Was I think cedar lake is not in the healthy range. Because there is not enough oxygen in the pond. The reasoning I had is there was a lot of millfoil in the water so it was taking all the oxygen in the water. At the experiment we did the samples were clear at the start .When we added iodide (a chemical) to the pond sample it made floc like orange pulp and it became less clear.Then line we added manganese sulfate .It got yellow orange . Then after adding a few more things we concluded that the pond sample had 3 mg of oxygen per liter. Then we added the same things to the fish tank and concluded that in the fish tank sample there was 2 mg of oxygen per liter. So neither sample is healthy water for most animals .

10/27/16
My Second Blog Post

We had a assignment to look for pollution over vacation. I looked for pollution and I found five point and five nonpoint . my five point sources are smoke stacks that would pollute the air which would rain and pollute the water and I saw it in burlington . I saw a rusty drainage pipe that would make flakes of metal pollute the water ,and I saw cows that make manure that would get in the river when it rains. I when I was going to Burlington I saw a truck on the side of the road that a leak in it and the gas would go into the river bi rainfall. Also I saw a bonfire someone made that made lots of smoke, the smoke would get in the air and it when it rains it would fall in the river. My five non point sources are.I saw some plastic bottles along the road , they would then get washed into the river and become floatables ( pieces of trash in the river ). My next piece of nonpoint source pollution is a rusty tire I saw in the the forest that would have metal chip of it and the metal would be pollution. And lastly I saw a leaky oil can spilling oil , an abandend tiller.Those are some of the forms of pollution I saw over the long weekend.


10/14/16
How do land and water interact ?

This module the main question we are trying to answer is how do land and water interact. We learned the meaning of nonpoint scource and point scource pollution. Non point scource pollition is when you can not easly edentify were the pollution came from. Point scorce pollution is when you can identify were the pollution came from fairly easly. Some examples of point source pollution are an oil spill coming from a car ,drain dumping ,sewage discharge. We made a stream table to learn how water picks up litter and erosin and were it flows. Also we did an elevation model to see how the high and low elevations affect was water flows.And on our first day we made lake scorecards to score ceder lake.

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