The Duration Hydrograph is a graphical presentation of recent daily streamflow, plotted over the long-term statistics of streamflow for each day of the year. Comfort is perhaps the most important factor, for if a trout’s basic needs aren’t met it likely won’t feed. Where available, we have graphs for Predictive Hydrograph 7 days, Water Temperature, Observed Height (ft.) 7 days, Observed Discharge (cfs) 7 days, and Duration Hydrograph. A rapid decrease in water temperature, even if it stays within the tolerance range of a particular species, can shut down the action. On the other hand, very heavy rain is not good for fishing. Tie on a brightly colored lure and reel it to the very end of your rod tip.
Below are some suggestions on how to determine the best fishing days for this month (or for any month of the year). Every book or chart that you read will probably have differences (some notable). Thus, like water temperature, dissolved oxygen also varies considerably with water depth. The compass is your temperature gauge—the most important locational tool on the boat in spring. As we approach the spawn, it’s important to know the importance of the water temp and how it will affect fishing. When it comes to finding the best fishing times, a good starting point is to avoid extreme temperatures. Research fishing seasons and migration patterns. Let’s look at two of the comfort factors I use to determine trout location, water temperature and barometric pressure. Anglers may be able to adapt their fishing practices in response to trout movement. As the seasons change, so does the water temperature and that helps determine what the bass prefer to feast on. Water temperature can either positively or negatively impact the quality of fishing because it affects the fish's willingness to feed. The amount of oxygen that is dissolved in the water is critical for fish and other pond life. The maximum amount of oxygen that can be dissolved is controlled by the water temperature. You can also use your hand or your elbow to help gauge water temperature. Mark the rod at the point where it entered the water when the lure disappeared. To take the temperature of water using your hand and elbow, start by holding your hand over the water to see if you can feel heat radiating from it. Fish are cold blooded creatures and unable to regulate their body temperature meaning the colder the water the slower the fish's metabolism is and the more torpid they are. At some point, you may find that you need to determine the approximate temperature of water and do not have a waterproof thermometer. To get a rough idea of the temperature, dip your elbow into the water for 5-10 seconds.