Carley's Watershed Blog Page

Water filter project

The experience was really fun I liked how we tried out the different filters and then took a combo of materials and put them all into the bottle and see how it would work. It was cool when we compared all three bottles at the end and saw which one worked the best and which one took out the most particles.

If I could use anything to make a water filter I would use more than one thing, I would use sand and gravel, ten coffee filters,and cheese cloth. I think that would work well because when my group tried sand and gravel it was the best one out of the three. The coffee filters worked really fast so if you put the two materials together then I think that it would be a pretty good filter.

I think money is more important than time in this project because you have unlimited amount of time but not unlimited amount of money so you could take as much time as you need to make a filter. Money in this project is so important because you have to use it wisely.

Before we made the filters we had to predict what material would work the best (materials: sand and gravel, screen and coffee filters). I predicted that the screen would work the best. I was very wrong. The water went right through the screen. It took some but not many particals out.

Where phosphorus in the lake comes from

We started a new unit about fertilizer and the growth of duckweed when there is different amounts of fertilizer in it. We read an article about addison county's watershed and where the phosphorus comes from which is mostly agricultural land. Some phosphorus comes from forest lands, stream erosion and developed lands (parking lots roads both paved or unpaved and large athletic fields). In the Addison county watershed the phosphorus rate is a little over 17.1, this is slightly higher than average. Statewide phosphorus levels can go as high as 35 percent in Missisquoi bay and as low as 0 percent for the Cumberland bay. My next blog post will be about our duckweed inquiry, so don’t go away!

Water oxygen testing

This week in science we did an oxygen test for two different kinds of water one was water from our guppy tank and the other one was from Cedar lake (Monkton pond). The tests came out unhealthy. For the guppy tank the test results were 2 mg per liter, and cedar lake the tests were 3 mg per liter. The first time what we added to test them is manganous sulfate which made the water chunky and orange/yellow colored. The second thing we added was sulfamic acid which made the chunkyness dissolve. The third chemical is sodium thiosulfate which were drops of stuff that we put in until the water got clear. Then you would find the ratio of drops to oxygen from the kit.


This week in science we had to find examples of: point and non-point pollution and land and water interacting.
Some examples I found for point pollution where chicken poop, chicken poop is pollution because if you use it as fertilizer then it kills the plant but also groundwater could come and carry some chicken poop to the nearest river. Another example is I saw a truck with a lot of smoke coming out of it's muffler. Land and water interacting: Something that I noticed for land and water interacting is when my dad dumped out the fire pit onto the patio and carried the stones with the water.


The last couple of weeks one of the things we have been doing in science is, point and non-point pollution. Point pollution is when you can point at someone or something and maybe say hey that car is leaking gas, that’s pollution. One example of non-point pollution is if you put lawn fertilizer on lawn and it rains all of the chemicals from your lawn fertilizer wash into a drain which goes into a river or a stream. Which causes pollution.

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