U.S. Army Corps of Engineers - Little Rock District
                               Pertinent Data File
                  for the 2017 Low Dissolved Oxygen (DO) Season
                  ---------------------------------------------

 16May - TR.DO and SC.OF.OZ sensors installed.
 17May - Norfork penstock and tailwater D.O./temp gages installed.
 18May - Bull Shoals penstock and tailwater D.O./temp gages installed.
 31May - TR.DO gage visit by USGS, temp gage repaired and D.O. 	
	 calibration checked.

 01Jun - All gages are all installed, Norfork gages need low water to 
	 complete and correct communication issues between gages.
 09Jun - problems remain at a couple D.O. sensors.  Norfork high water 
         has created an unsafe access problem, the gage was finally 
         installed and is reading high and awaits calibration.  
         Beaver TW D.O. sensor is reading low during no generation.
 13Jun - Table Rock drops under 6 ppm during generation, vents blocked 
	 open.
 15Jun - Norfork appears to be under 5 ppm, block open vents.  NORTW
	 gage is now working.  BEA.DO is only gage suspected to be 
	 needing adjustments.
 13-16 June - First lake profiles of the season, lower than last year:
	 Beaver 	14 Jun 17	6.17 vs	7.47 13 Jun 16	
	 Table Rock	16 Jun 17	4.57 vs	6.67 16 Jun 16	
	 Bull Shoals	15 Jun 17	6.47 vs	8.53 14 Jun 16	
	 Norfork	14 Jun 17	4.45 vs	5.18 15 Jun 16	
	 Greers Ferry	13 Jun 17	6.53 vs	7.74 14 Jun 16	
 26Jun - USGS reports BEA.DO gage is reporting parameters in reverse 
 	 order, temp is D.O. and vice versa.
 26Jun - IDO plots are updated and June readings are historically low
	 when compared to the data set that starts in 1985.  Data is
	 sent to the D.O. committee members via email.
 28Jun - Table Rock received 2 loads of liquid oxygen.
 29Jun - Beaver vents blocked open. 

 05Jul - USGS has scheduled next profiles for the week of 17 July.  
	 These will be for Table Rock, Bull Shoals, and Norfork only.
 18Jul - Beaver IDO=5.24; Table Rock IDO=3.08; Bull Shoals IDO=5.88. 
 19Jul - Norfork IDO=2.97
 24Jul - Greers Ferry tailwater D.O. drops below 6 ppm over previous
 	 weekend.  Sent word to dam to block open vents.  Previous 
 	 earliest opening of vents was 01 Aug 2011.
 31Jul - Bull Shoals vents blocked open.

 01Aug - Norfork tailwater D.O. dropped below 4 ppm; Shiphon operated
         24/7 to improve conditions.  A recommended maximum generation 
	 rate of 100% was issued at Table Rock and Norfork Lake.
 09Aug - Norfork recommended maximum generation rate of 90% nameplate
	 or 36 MW per unit was issued.
 11Aug - Table Rock recommended maximum generation rate of 88% 
	 nameplate or 44 MW per unit was issued.
 15Aug - USGS checked TR.DO and SC.OF.OZ gages today.
 15-17 Aug - Norfork, Bull Shoals, and Table Rock profiles measured:
	 Norfork	15 Aug 2017	1.28 vs	1.70 09 Aug 2016
	 Bull Shoals	15 Aug 2017	3.72 vs	5.52 09 Aug 2016
	 Table Rock	17 Aug 2017	1.45 vs	3.82 08 Aug 2016
 16Aug - Norfork recommended maximum generation rate of 75% nameplate
	 or 30 MW per unit was issued.
 16Aug - Table Rock is injecting LOX, RMG rate is 38 Mw per unit 
 	 without injection or 76% nameplate.
 16Aug - Table Rock injects 3.1 tons LOX.
 17Aug - Table Rock injects 7.2 tons LOX.
 17Aug - Fairview D.O./Temp gage below Bull Shoals started reporting
  	 erroneous data.  Has been repaired.
 25Aug - Norfork RMG rate is 70% nameplate (28 Mw per unit).
 28-29 Aug - Table Rock, Norfork, and Greers Ferry profiles measured:
	 Greers Ferry	28 Aug 2017	2.61 vs 4.98 12 Sep 2016
	 Norfork	28 Aug 2017 	0.41 vs 0.41 12 Sep 2016
	 Table Rock	29 Aug 2017    	1.04 vs 1.60 14 Sep 2016
 29Aug - Table Rock recommended maximum generation rate of 70% 
	 nameplate or 35 MW per unit was issued. Table Rock injected
         4.4 tons of LOX overnight.
 30Aug - Norfork RMG rate is 60% nameplate (24 Mw per unit).
 30Aug - Norfork RMG rate is 50% nameplate (20 Mw per unit).
 30Aug - Table Rock injects 0.9 tons of LOX.
 31Aug - Table Rock injects 13 tons LOX, Inventory 47 tons.
	 Norfork tailwater gages stop reporting at midnight.
	 Norfork generating 50 Mw, 20MW unit 1 and 30 from unit 2.

 01Sep - Norfork tailwater gages report at 0700, possible battery
         issue and hoping gages will report during sunlight hours.
 05Sep - Table Rock RMG rate changed to 60% (30Mw).
 07Sep - Norfork generating 49 Mw, 20Mw unit 1 and 29 Mw unit 2.
 11Sep - Norfork generating 48 Mw, 20Mw unit 1 and 28 Mw unit 2.
 11Sep - Table Rock injected 4.3 tons of LOX.
 12Sep - Norfork generating 45 Mw, 20Mw unit 1 and 28 Mw unit 2.
 12Sep - Bull Shoals recommended maximum generation rate of 80% or 
         268 Mw was issued.
 12Sep - Table Rock injected 9.9 tons of LOX.
 13Sep - Table Rock injected 1.7 tons of LOX, 52.3 tons on hand.
 14Sep - Bull Shoals recommended maximum generation rate of 80% or 
         264 Mw was issued.
 14Sep - Table Rock injected 5.2 tons of LOX, 47.1 tons on hand.
 15Sep - Table Rock injected 3.4 tons of LOX, 17.1 tons delivered.
	 60.9 tons LOX on hand.
 16Sep - Table Rock injected 2 tons of LOX, 58.9 tons on hand.
 18Sep - Table Rock injected 4.9 tons of LOX, 54 tons on hand.
 20Sep - Bull Shoals RMG rate is 75% of 195 Mw.