Tag Archives: Salmon number

Water levels in Folsom increased and Salmon number decreased

In the early phases of February, rains improved the water levels in Folsom Lake, but there was alarming news followed by this positive news. The National Marine Fisheries Service reported a decrease in population of Salmon as only 3% of the fishes survived from the draught conditions from previous years.

With the end of 2015, Folsom Lake had the lowest depth in its history. There were specialized pump systems installed for getting water to suburbs. North California region had persistent rainfall in the end of January and the reservoir was full of water for early phases of February. The levels of lake have increased with the officials turning their talks towards releasing eater downstream to avoid the risks of flood. Folsom Dam is built to control the levels of water and it has approximately been a year since the time has come for reservoir for reaching the complete flood control stage. for more details, click on : http://www.recreation.gov

Water levels in Folsom increased and Salmon number decreased

There are about 128 billion gallons of water added by storms beginning in the area from the month of December. The lake gained about two times the capacity from the existing levels. Sierra storms were majorly responsible for this rise. The daily water release from Folsom was lesser on average. The last wet winter had 13 times higher daily releases from this year. Folsom Lake level doesn’t go up very soon with snowfall in Sierra, especially the North region.

This situation with lots of water in Folsom Lake doesn’t imply to the finish of drought. The reservoir of this lake is the smallest among the list of major reservoirs and hence, it gets filled up rapidly than the other ones. The other lakes have the following statuses in terms of depth:

Lake Oroville: 66%

Shasta Lake: 76%

Trinity Lake: 40%

The storage capacity of these lakes is about 10 times to that of the capacity of Folsom Lake.

Many of them have not even reached normal stage and that is actually the matter of concern at present. The drought must end for the following reasons:

  • 90% of average levels should be there with statewide reservoir storage
  • Sacramento River basin region reservoirs on the 4 major rivers needs to attain flood control level
  • Run-off forecasts need to be about 110% on an average for state’s water year (Oct-Sept)

If the condition is to be recovered, it will take about one wet year to fulfill the situation. The water cuts are expected to be extended for urban areas throughout the California region. The usage in Sacramento region is required to be decreased by minimum 25% in comparison to 2013 stats.

There was an alarming reminder about the drought impact. It was confirmed that there is a rapid decline in the winter-run Chinook salmon. The species is having probability to get vanished, if there are similar conditions in the lake. Drought took away the cold water needed by salmon for survival. In 2015, there was an unsuccessful trial made by federal officials and they held more water behind Shasta Dam for creating cool water pools for fish. They also released water from Folsom Dam for keeping the water –network active. The water was heated up and many Chinook salmons got dead. The supplies are expected to get diminished in the upcoming year due to lessened fishes. It is an alarming situation for farmers and fishermen.