Boise County – So far, it’s been a rather slow runoff and everything seems to have behaved pretty well. There is a lot of high elevation snow left and with the above normal temperatures this week and rain in the forecast through the weekend we’ll see rivers and creeks rise significantly over the next several days. The South Fork at Lowman, and Payette at Horseshoe Bend may approach bankful by Sunday but we don’t expect flooding at this point. Some smaller creeks and streams draining out of the high country may get outside of their banks. The rest of May and into June will be interesting to see how the above normal high elevation snow pack comes off and any rain storms we get on top of that.
Attached is the latest forecast for the South Fork at Lowman. Mores Creek will come up but it I don’t think it will reach levels like it did back in March.
Seems like the snowpack on the Pioneer Fire burned area has been melting off without causing significant issue as well.
Senior Service Hydrologist
Direct: (208) 334-9538
Public Line: (208) 334-9860
National Weather Service
3833 S. Development Ave. Bldg 3807
Boise, ID 83705-5354