You can stop and ask, what caused the lack of water? The heat was one of the factors. There could have been an obstruction in the water that we couldn't see that hindered the water to flow. Many different factors can lead to the water not being as much as it once was, yet remember the water was still there.
The water still flowed but not as it once was and not representative of its source. Therefore, the little arm of the river is merely a smaller part of a bigger body of water and source. It's not the source. There will be a time when the water goes up and down but it will never go away.
Then on top of that, something we noticed was how due to the water being low, there were snakes, more than I wanted to think about, that were present where the water did flow to try and catch fish.
So here comes the "so what": How often is this a representation of our life! We have those times when our faith is weak; whether through the circumstances that we face or through obstructions, we have allowed in our life. And we can think that the love of Christ has been removed, yet what holds true is that the love is always there no matter what (Joshua 1:9; Romans 8:1, 37-39). Then there are times in our life that even with the small amount of faith we try to demonstrate in Christ then the enemy is right there to pounce upon us and steal our joy (John 10:9-10).
Yet here is the greatest truth to remember: even though our faith may be weak and have times of weakness, it's not representative of the source which is God's love through Christ. The enemy will always be there to pounce but we don't have to give him a place in our lives. We may have obstructions in our lives that are hindering the flow of God's love over our lives, remove the obstacles of sin and allow His grace to overflow in your hearts.
Follow Christ today and see the difference it will make in your river!