Around these parts, in the Central Valley, low foothills and the foothills of the Sierra Nevada, peak runoff in streams and rivers is generally around the first week of spring. This year, it was the last week of March, about March 22-28. This is because most of the runoff from streams and rivers in this area is from rainfall. We have little snow in the Valley and foothills, and for some reason, snow runoff from the Sierras is generally not enough to cause flooding in the foothills and valleys below.
What is the peak runoff for rivers and streams in your region of wherever? Chime in.