And now, finally, the ascending upward trend in the run-off from the upper South Fork Boise River Basin. Flow usually peak just after Memorial Day.
A Look to the Upper South Fork Boise
A couple of warm days signals the beginning of spring run-off. And a set of charts assembeld above provides insight on what the near term holds for Anderson Ranch Reservoir. And there are implications for the South Fork Boise downstream of Anderson Ranch Dam.
The first chart shows the inflow to Anderson Reservoir at Featherville. The flows have started to increase and are converging towards the long term average.
Contraindications in the Upper Watershed
The first month of the 2010 water year is done and there is one interesting development in the South Fork Boise River. During October the flows upstream of Anderson Ranch Reservoir were higher than last year (see alternating graph above). The blue line (it’s hard to see) was higher through the month owing to the big storm that blew across the northern Rockies in early October. Trinity Mountain supposedly has 25 inches of snow. So, as that snow melted the meter at Featherville recorded a higher flow than October 2008.
South Fork Partners
