Our weather patterns here include heavy rain storms. What I don't happen to catch gets flushed away into the drain in the street, which leads to a nearby creek

Our weather patterns here include heavy rain storms. What I don't happen to catch gets flushed away into the drain in the street, which leads to a nearby creek (stormwater is kept separate from sewage here). And of course, all the other parts of the road that don't happen to run up to a yard are not really groomed, so all that debris is flushed into the waterways.