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	Name:	Jorick -
	Subject:	lake level
	Date:	5/12/2022 10:35:33 PM (updated 5/12/2022 10:42:57 PM)

That depends on things I really don't know for sure. I know that they are required to release a certain amount of water for interests downstream, but I don't know if the remaining five turbines can fulfill this or whether they need to release some more water. So, I'm posting the water levels and requirements that I keep track of. Note that some info may not be totally accurate since the info was hard to find and there are conflicting reports. Sorry for the strange formatting. This forum doesn't accept multiple spaces.

Million acre feet
..2.8..Arizona allotment
..4.4..California allotment
..0.3..Nevada allotment
..7.5..Total lower Colorado river basin allotment
..1.1..Extra allotment in surplus conditions
..1.5..Mexico allotment, treaties signed in 1944
.10.1..Total allotment

Elev.....Store
1229...........Maximum pool
1225...........Highest level ever reached (1983)
1219.6...25.9..Full pool (spillway)
1200.....22.9
1145.....15.9..Mexico surplus lower limit
..........................Mexico allotment 1.54, increased by 0.04 progressively to 0.2
1090...........Tier-0 shortage (06/10/20)
..........................Arizona allotment 2.608 reduced by 0.192
..........................California allotment 4.4 reduced by 0
..........................Nevada allotment 0.292 reduced by 0.008
..........................Mexico allotment 1.459, reduced by 0.041
1075 9.4 Tier-1 shortage (05/25/21), allotment 7.167 reduced by 0.512
..........................Arizona allotment 2.48 reduced by 0.32 + 0.192 = 0.512
..........................California allotment 4.4 reduced by 0 + 0 = 0
..........................Nevada allotment 0.287 reduced by 0.013 + 0.008 = 0.021
..........................Mexico allotment 1.42, reduced by 0.05 + 0.03 = 0.08
1050 7.5 Tier-2a shortage, (12 of 17 generators shut off), allotment 7.083
..........................Arizona allotment 2.4, reduced by 0.4 + 0.24 = 0.64
..........................California allotment 4.4, reduced by 0 + 0 = 0
..........................Nevada allotment 0.283, reduced by 0.017 + 0.01 = 0.027
..........................Mexico allotment 1.42, reduced by 0.05 + 0.03 = 0.08
1045............Tier-2b shortage (California restrictions)
..........................Arizona allotment 2.4, reduced by 0.4 + 0.24 = 0.64
..........................California allotment 4.2, reduced by 0.2
..........................Nevada allotment 0.283, reduced by 0.017 + 0.01 = 0.027
..........................Mexico allotment 1.42, reduced by 0.075
1025.......5.8..Tier-3 shortage, allotment 7.0
..........................Arizona allotment 2.32, reduced by 0.48
..........................California allotment 4.2, reduced by 0.2
..........................Nevada allotment 0.28, reduced by 0.02
..........................Mexico allotment 1.42, reduced by 0.125
1000.......4.3..Shortage condition where further measures may be taken
.950............Minimum power pool (inactive pool)
.915............Winter pool (meaningless)
.895............Intake towers, lower cylinder gate entrance liners (old dead pool)
.860............New water intake tunnel (dead pool starts)
.708.7.....0.0..Lake bottom

First number is allocation reduction, second is savings reduction, third is total

Numbers taken from the 2007 Colorado River Interim Guidelines for Lower Basin Shortages document, sections XI.G.2.D.1.a, b, and c.
https://www.usbr.gov/lc/region/g4000/4200Rpts/DecreeRpt/2013/1%202007%20ROD%20Interim%20Guidelines-Shortages-Coordinated%20Operations.pdf

Tier shortages declared on Oct 1, restrictions start Jan 1 of the following year.