Why You’ll Never Complain About Your Pioneer Water Tank Being Too Big, with Harvested Rain Solutions in Austin, Texas
Runoff Coefficients | ||
Character of Surface | High | Low |
Roof (metal, gravel, asphalt shingle) | .95 | .75 |
Paving (concrete, asphalt) | .95 | .70 |
Brick Paving | .85 | .70 |
Gravel | .70 | .25 |