Water Balance
What major cities are in the Lower Basin?
Boise, Meridian, Caldwell, and Nampa
During the flood season, what is the flow of the Boise River in cubic feet per second?
240 cubic feet per second
What were the two major problems the river was causing depending on the time of year?
Flooding and/or not enough water for irrigation.
_______ is water lost to the atmosphere through both evaporation and transpiration from plants.
Evapotranspiration
What mountain ranges does the Upper Basin collect water from?
The Sawtooths, Smokey, and Boise Mountains
How many water monitoring gauges were installed in TV canals in 2024?
88
How far into the valley was the dam built?
22 miles
Water used to water your garden is example of which type of water use?
Noncompetitive Use
Who uses a water balance to track how much water comes in or out of a watershed.
Water Managers
What percentage of Treasure Valley drinking water comes from groundwater aquifers?
70%
How many people did the town hold and how many people were there at its peak?
It held 1400; at its peak it had 1059
How much water can the four main reservoirs in the Treasure Valley hold?
Over a million acre-feet of water.
According to the definition of a watershed, water feeds downhill into what bodies of water?
Rivers, Lakes, or Oceans
What tool is used to determine how much dam space is needed for incoming snow melt?
The Rule Curve
What date was the Arrowrock dam dedicated?
October 4, 1915
What percentage of water is pulled from the Boise River for irrigation in the Treasure Valley?
80%
What is tracked in a water balance?
Inputs and outputs of water.
What must farmers do everyday in order to receive irrigation water?
Place a water order
Why was the dam such a critical build at the time?
It provides water to the treasure valley.
What months have the lowest streamflow?
Late Summer Months (August and September)