Creek write up

Is our creek healthy By my research it looks very clean but I did more testing and it is 90% healthy because there is rubbish in the creek we are trying not to make it worse.

where trying to make its cleaner but when people drive over the bridge the chuc out there rubbish

when you need to test how fast the water flow is
an orange down the creek/stream and a stopwatch to time how fast it takes for the orange to get to the point you want it to.