CORPS OF ENGINEERS
                                  LITTLE ROCK DISTRICT
 
                        DISSOLVED OXYGEN AND TEMPERATURE REPORT
 
                                   TUESDAY   23 AUG 2011
                ______________________________________________________________
               |                    |                    |                    |
               |  BULL SHOALS       |  NORFORK           |   CALICO ROCK      |
               |  (tailwater, avg.) |  (tailwater)       |   TEMP & FLOW      |
               |____________________|____________________|____________________|
               | D.O. | TEMP | REL  | D.O. | TEMP | REL  |  TEMP   |  FLOW    |
               |------|------|------|------|------|------|--------------------|
               | mg/l |deg F | cfs  | mg/l |deg F | cfs  |  deg F  |   cfs    |
               |--------------------|-------------|------|--------------------|
     22AUG 0600|  5.7 | 57.8 | 14306|  5.0 | 53.6 |    20|  61.0   |   18774  |
     22AUG 1200|  5.5 | 58.0 | 15722|  4.1 | 55.0 |  5564|  62.2   |   16321  |
     22AUG 1800|  4.8 | 57.8 | 18434|  3.9 | 54.9 |  5588|  62.4   |   18708  |
     22AUG 2400|  6.0 | 58.0 | 12842|  3.9 | 54.9 |  5568|  61.2   |   20052  |
     23AUG 0600|  7.2 | 57.9 | 11474|  4.6 | 53.8 |     0|  60.6   |   19947  |
               |      |      |      |      |      |      |         |          |
         MAX   |  6.7 | 58.0 |      |  7.4 | 55.0 |      |   63.0  |          |
          time | 0100 | 1100 |      | 0900 | 1000 |      |   1600  |          |
          date |23AUG |22AUG |      |22AUG |22AUG |      |  22AUG  |          |
  release @ max| 10658| 14426|      |   164|  5492|      |   17041 |          |
               |      |      |      |      |      |      |         |          |
         MIN   |  4.7 | 57.8 |      |  3.8 | 53.6 |      |   60.6  |          |
          time | 1900 | 0600 |      | 1900 | 0600 |      |   0500  |          |
          date |22AUG |22AUG |      |22AUG |22AUG |      |  23AUG  |          |
  release @ min| 18482| 14306|      |  5588|    20|      |   18774 |          |
  _____________|______|______|______|______|______|______|_________|__________|
 
  LAKE PROFILES
 
      BULL SHOALS 13JUL11         NORFORK 13JUL11
         elev = 687.19             elev = 571.68
      DEPTH  D.O.   TEMP        DEPTH  D.O.   TEMP
      feet   mg/l   deg F       feet   mg/l   deg F
      -----  -----  -----       -----  -----  -----
       0.6   8.65   87.06         0.3  8.89  86.04
      17.0   8.74   84.85<       10.0  8.87  85.98
      21.1  10.79   79.70        21.0  4.34  83.53<
      22.0   9.95   76.23<       25.0  0.51  73.26
      26.1   6.44   68.32        28.1  0.17  69.62<
      48.1   3.17   61.66        33.0  0.30  64.90
      60.1   4.34   60.57        50.1  3.23  59.04
     100.2   6.07   56.91        90.0  5.88  54.36
     120.1   7.31   55.47       110.1  5.96  50.83
     150.0   8.29   54.07*      120.1  5.41  49.28*
     170.2   6.19   50.16       150.0  3.56  47.46
     200.1   3.87   45.64       170.0  2.33  46.89
 
 
      I.D.O. =  7.30 mg/l        I.D.O. =  5.18 mg/l
 
      < = Approximate range of thermocline
      * = Approximate centerline of penstock
 
  _____________________________________________________________________________
 
  REMARKS
 
  Norfork max recommeded gen rate is 70 mw, effective 23 August.
  Vents blocked open 9 August at Bull Shoals.
  Loads should be spread evenly across all available units at each project.