CORPS OF ENGINEERS
                                  LITTLE ROCK DISTRICT
 
                        DISSOLVED OXYGEN AND TEMPERATURE REPORT
 
                                   THURSDAY  21 SEP 2017
                ______________________________________________________________
               |                    |                    |                    |
               |  BULL SHOALS       |  NORFORK           |   CALICO ROCK      |
               |  (tailwater, avg.) |  (tailwater, avg)  |   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    |
               |--------------------|-------------|------|--------------------|
     20SEP 0600|  3.6 | 60.8 | 13502|  4.0 | 60.8 |  3811|  63.9   |   17536  |
     20SEP 1200|  4.0 | 61.0 | 13117|  4.0 | 61.0 |  3804|  64.2   |   17570  |
     20SEP 1800|  3.8 | 61.1 | 13059|  3.9 | 61.0 |  3801|  65.6   |   17502  |
     20SEP 2400|  3.7 | 60.8 | 13140|  3.7 | 61.0 |  3810|  64.8   |   17230  |
     21SEP 0600|  3.7 | 60.8 | 13129|      |      |  3822|  64.2   |   17230  |
               |      |      |      |      |      |      |         |          |
         MAX   |  4.1 | 61.2 |      |  4.1 | 61.1 |      |   65.7  |          |
          time | 1400 | 1300 |      | 0500 | 1300 |      |   1700  |          |
          date |20SEP |20SEP |      |21SEP |20SEP |      |  20SEP  |          |
  release @ max| 13166| 13129|      |  3832|  3810|      |   17468 |          |
               |      |      |      |      |      |      |         |          |
         MIN   |  3.6 | 60.7 |      |  3.7 | 60.8 |      |   63.8  |          |
          time | 0600 | 0700 |      | 2200 | 0600 |      |   0800  |          |
          date |20SEP |20SEP |      |20SEP |20SEP |      |  20SEP  |          |
  release @ min| 13502| 13485|      |  3823|  3811|      |   17536 |          |
  _____________|______|______|______|______|______|______|_________|__________|
 
  LAKE PROFILES
 
      BULL SHOALS 13SEP17       NORFORK 12SEP17
         elev = 666.53             elev = 559.83
      DEPTH  D.O.   TEMP        DEPTH  D.O.   TEMP
      feet   mg/l   deg F       feet   mg/l   deg F
      -----  -----  -----       -----  -----  -----
       0.5    7.40  77.20         0.2  7.70  78.28
      20.0    7.32  77.18        10.0  7.71  78.28
      30.0    6.19  76.71<       30.0  7.63  78.26<
      40.0    0.78  75.52<       42.0  5.62  77.11<
      41.0    0.00  73.96        43.0  0.00  72.99
      70.0    0.00  61.54        60.0  0.00  65.34
     100.0    1.31  61.54        80.0  0.00  61.74
     130.0    2.56  59.63*       90.0  0.19  60.91
     140.0    2.40  58.98       110.0  0.00  59.79
     150.0    1.31  58.28       120.0  0.00  59.54*
     170.0    0.00  52.12       130.0  0.00  58.59
 
     I.D.O. = 1.00 mg/l         I.D.O. = 0.00 mg/l
 
      < = Approximate range of thermocline
      * = Approximate centerline of penstock
 
  _____________________________________________________________________________
 
  REMARKS
 
  Norfork vents blocked open 15 June.  Bull Shoals vents blocked open 31 July.
  Bull Shoals max total gen of 195 Mw as of 20 Sep.  Norfork siphon on
  continuously as of 1 August. Norfork max total gen of 45 Mw as of 12 Sep.