Water temperatures in the LAR have continued to rise over the past weeks. The graph below shows that gravel temperatures are exceeding 63 degree F every day. The literature indicates that Steelhead eggs and alevin cannot survive long at these high temperatures.
However, this figure shows that overall, the dissolved oxygen level continues to be mostly healthy. Although DO is trending down, only 2.5% of samples demonstrated unhealthy DO within gravel samples this past week.