Is gravel considered impervious surface?
Yes. It is difficult for water to soak into a packed gravel surface. Once gravel is compacted, from cars or heavy equipment, for example, surface water runs off of it much like a paved surface. The gravel may slow the flow of water from the area, but nearly the same amount of runoff will flow from the area under the gravel as if the gravel was not there. Many flat roofs are covered with gravel, but they still shed the rainwater that falls on them. In addition, if cars or heavy equipment are traveling on these gravel surfaces; runoff typically carries pollutants like metals or petroleum into our waterways.

Show All Answers

1. What is stormwater and why does it need to be managed?
2. Why do I have to pay a stormwater utility fee?
3. What services are funded by money collected from the stormwater utility fee?
4. Who pays the fee?
5. How is the stormwater utility fee different from a tax?
6. Why isn't the stormwater utility fee just included on my monthly water bill?
7. I think my bill may be calculated too high, what should I do?
8. Do other cities have stormwater user fees?
9. Is gravel considered impervious surface?
10. What happens to my stormwater utility bill when I am no longer the property owner?
11. How can I apply for a utility fee credit?
12. Can I reduce my fee by controlling the runoff from my property?
13. My property has terrible drainage problems. Will the utility fee pay for drainage improvements on my property?
14. I saw someone dump something into a stormdrain. Who do I call?
15. How do I get a rain barrel?