HYDROLOGY QUESTION 2. Describe what this map is showing, focusing on what the gr
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HYDROLOGY QUESTION
2. Describe what this map is showing, focusing on what the gray and blue areas represent. You can find this in your readings if you need help.
Describe what the blue and gray areas represent.
Is this color choice intuitive? That is, does choosing blue for the one thing and gray for the other make sense?
What are the two main water resources here for irrigation water?
Where does the irrigation water come from at location A, and from where for location G?
EXPLANATION -10 to 20 -10s0-15 -15to-20 20to-25 2510-30 -30-foot decline Figure N-2The use of both ground water and surface water for irrigation in Nebraska has resulted in significant rises and declines of ground water leveils in different parts of the State. (Map provided by the University of Nebraska, Conservation and Survey Division.)Explanation / Answer
The map is showing the change in the ground water level in state. The parts in blue is where the ground water level decreased and the part in grey is where the ground water level increased.
The areas in blue and grey tells us lot about the irrigation method in the area. The areas in blue is where the ground water level decreased that means the irrigation method used ground water in those areas and the areas in grey is where the ground water level increased that means the irrigation method used other than ground water maybe surface water in those areas.
The use of different colors make sense as we can easily differentiate where the water level increased and where decreased without need to refer the nomenclature again and again.
Surface water and ground water are two main source for irrigation water. The irrigation water at location A came from ground water and irrigation water at location G came from surface water.
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