Well, the last time I saw raindrops on glass, I did not notice that they were particularly muddy, so I may suggest that it is not mud but acid that your rain contains, and perhaps you confused the two.
Yet once rain hits the ground, it may collect in puddles of rainwater. When disturbed, the rainwater is muddy. In this case, the answer is that the very small particles of soil have been stirred up by the energy put into the water, and they will be temporarily suspended, making the water muddy (as the water is now cloudy, and has the colour of the soil).
If it is flowing freely down a slope, the water is muddy because as it trickles, it picks up tiny particles of soil, making it muddy.
If this does not answer your question, try rephrasing it to make it more specific.
It gets muddy because the rain (water) mixed with some of the land (dirty, soil) turning into mud. Just as if you were to add some water to dirt, it would become muddy.
Impermeable
If you want to make distilled water from rainwater, you would perform distillation on the rainwater.
Yes, muddy do have.
His blues music
It settles out.
to become a delicous peice or rainwater some day.
It gets muddy because the rain (water) mixed with some of the land (dirty, soil) turning into mud. Just as if you were to add some water to dirt, it would become muddy.
Play Let's Jump mini-game and find some puddles on the background. Jump into them and your horse will become muddy, than you can clean it.
Impermeable
Gregg Rainwater's birth name is Rainwater, Gregg Andrew.
Keech Rainwater's birth name is Randy Keech Rainwater.
Gregg Rainwater is 5' 10".
Jenny Rainwater's birth name is Jenny Elizabeth Rainwater.
Marvin Rainwater's birth name is Marvin Karlton Percy Rainwater.
Patricia Rainwater is 5'.