Spreadsheet: 40905d1239292123-show-minor-unit-labels-for-chart-nant-helen-data-from-the-operator
Sheet: Flow Monitoring

 | Nant Helen Extension Site
 | Details of the Flow monitoring, which appear on the drawings
 | Year 2002/2003 - Monthly readings
 | No. 1 - Yard Adit, Abercrave. |  |  |  |  |  |  | No. 2 - Gwaun Clawdd Adit, Below Morgans farm |  |  |  |  |  |  | No. 3 - Cwm Du Adit, Penrhos Wood |  |  |  |  |  | Sump Level |  | No. 5 - Nant Pen-rhos,  WTA 'H' |  |  |  |  | No. 6 - Nant Gyrlais, WTA 'I'
 | Date | 'h', ([NAME]) | Flow meter | X" area | Flow (l/s) |  |  | Date | 'h', ([NAME]) | Flow meter | X" area | Flow (l/s) |  |  | Date | 'h 1', ([NAME]) | Flow meter | X" area | Flow (l/s) |  | 145.2 |  | Date | 'h', ([NAME]) | Flow (l/s) |  |  | Date | 'h', ([NAME]) | Flow (l/s)
 | 2002-05-09 00:00:00 | 200 |  |  | 75 |  |  | 2002-05-09 00:00:00 | 150-200 |  |  | 59-79 |  |  | 2002-05-09 00:00:00 | 250 |  |  | 13.23
 | 2002-05-15 00:00:00 | 110 |  |  | 26.3 |  |  | 2002-05-15 00:00:00 | 150-200 |  |  | 53-73 |  |  | 2002-05-15 00:00:00 | 250 |  |  | 10.71
 | 2002-05-22 00:00:00 | 120 |  |  | 38.1 |  |  | 2002-05-22 00:00:00 | 150-200 |  |  | 53-73 |  |  | 2002-05-22 00:00:00 | 260 |  |  | 10.78
 | 2002-05-28 00:00:00 | 100 |  |  | 29.16 |  |  | 2002-05-28 00:00:00 | 187-200 |  |  | 74-79 |  |  | 2002-05-28 00:00:00 | 250 |  |  | 13.25 |  | 141.69
 | 2002-06-06 00:00:00 | 120 |  |  | 40.1 |  |  | 2002-06-06 00:00:00 | 190-200 |  |  | 79 |  |  | 2002-06-06 00:00:00 | 250 |  |  | 11.97 |  | 141.29
 | 2002-06-12 00:00:00 | 110 |  |  | 37.8 |  |  | 2002-06-12 00:00:00 | 195-200 |  |  | 67-68 |  |  | 2002-06-12 00:00:00 | 250 |  |  | 11.97 |  | 141.45
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 141.44
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 140.67
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 139.29
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 139.29
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 138.22
 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 139.58
 | 2002-11-05 00:00:00 | 110 |  |  | 28.7 |  |  | 2002-11-05 00:00:00 | 190 |  |  | 71 |  |  | 2002-11-05 00:00:00 | 260 |  |  | 8.45 |  | 141.78
 | 2002-12-11 00:00:00 | 100 |  |  | 28.2 |  |  | 2002-12-11 00:00:00 | 200 |  |  | 91 |  |  | 2002-12-11 00:00:00 | 260 |  |  | 9.75 |  | 142.07
 | 2003-01-22 00:00:00 | 120 |  |  | 48.3 |  |  | 2003-01-22 00:00:00 | 230 |  |  | 117 |  |  | 2003-01-22 00:00:00 | 250 |  |  | 12.58 |  | 144.04
 | 2003-03-04 00:00:00 | 110 |  |  | 36.9 |  |  | 2003-03-04 00:00:00 | 170 |  |  | 79.5 |  |  | 2003-03-04 00:00:00 | 270 |  |  | 10.72 |  | 142.23
 | 2003-04-07 00:00:00 | 120 |  |  | 30.6 |  |  | 2003-04-07 00:00:00 | 190 |  |  | 83.2 |  |  | 2003-04-07 00:00:00 | 180 |  |  | 19.93 | NB Obstruction removed at Cwm Du | 141.52
 | 2003-06-02 00:00:00 | 150 |  |  | 18.79 | Erroneous reading |  | 2003-06-02 00:00:00 | 150 |  |  | 64.8 |  |  | 2003-06-02 00:00:00 | 150 |  |  | 26.15 |  | 140.74
 | 2003-06-30 00:00:00 | 170 |  |  | 34.26 |  |  | 2003-06-30 00:00:00 | 130 |  |  | 63.2 |  |  | 2003-06-30 00:00:00 | 180 |  |  | 30.99 |  | 139.87
 | 2003-07-30 00:00:00 | 150 |  |  | 32.61 |  |  | 2003-07-30 00:00:00 | 150 |  |  | 68.4 |  |  | 2003-07-30 00:00:00 | 150 |  |  | 24.03 |  | 141.09
 | 2003-08-29 00:00:00 | 160 |  |  | 9.09 | Velocity checked |  | 2003-08-29 00:00:00 | 160 |  |  | 62.4 |  |  | 2003-08-29 00:00:00 | 180 |  |  | 21.7 |  | 140.01
 | 2003-09-25 00:00:00 | 190 |  |  | 3.84 |  |  | 2003-09-25 00:00:00 | 140 |  |  | 57.12 |  |  | 2003-09-25 00:00:00 | 150 |  |  | 11.31 |  | 138.9
 | 2003-10-31 00:00:00 | 210 |  |  | 1.76 |  |  | 2003-10-31 00:00:00 | 130 |  |  | 47.58 |  |  | 2003-10-31 00:00:00 | 160 |  |  | 15.34 |  | 138.83
 | 2003-11-03 00:00:00 | 210 |  |  | 2.65 |  |  | 2003-11-03 00:00:00 | 140 |  |  | 57.96 |  |  | 2003-11-03 00:00:00 | 170 |  |  | 15.29 |  | 141.4
 | 2004-01-06 00:00:00 | 250 |  |  | 24.53 |  |  | 2004-01-06 00:00:00 | 180 |  |  | 90.72 |  |  | 2004-01-06 00:00:00 | 160 |  |  | 13.42 |  | 141.67
 | 2004-02-05 00:00:00 | 270 |  |  | 169.06 |  |  | 2004-02-05 00:00:00 | 230 |  |  | 124.2 |  |  | 2004-02-05 00:00:00 | 150 |  |  | 18.34 | NB Persistent heavy rainfall. | Not Visible
 | 2004-03-01 00:00:00 | 130 |  |  | 49.19 |  |  | 2004-03-01 00:00:00 | 190 |  |  | 70.68 |  |  | 2004-03-01 00:00:00 | 190 |  |  | 13.69 | Cold Dry Spell | Not Visible
 | 2004-04-06 00:00:00 | 120 |  |  | 43.07 |  |  | 2004-04-06 00:00:00 | 170 |  |  | 57.12 |  |  | 2004-04-06 00:00:00 | 180 |  |  | 9.3 |  | Not Visible
 | 2004-05-14 00:00:00 | 110 |  |  | 33.76 |  |  | 2004-05-14 00:00:00 | 150 |  |  | 36.9 |  |  | 2004-05-14 00:00:00 | 180 |  |  | 9.3 |  | Not Visible
 | 2004-06-04 00:00:00 | 100 |  |  | 29.12 |  |  | 2004-06-04 00:00:00 | 150 |  |  | 33.3 |  |  | 2004-06-04 00:00:00 | 180 |  |  | 8.86 |  | Not Visible
 | 2004-07-06 00:00:00 | 90 |  |  | 22.87 |  |  | 2004-07-06 00:00:00 | 130 |  |  | 17.16 |  |  | 2004-07-06 00:00:00 | 180 |  |  | 9.74 |  | Not Visible
 | 2004-08-01 00:00:00 | 90 |  |  | 21.01 |  |  | 2004-08-01 00:00:00 | 120 |  |  | 15.84 |  |  | 2004-08-01 00:00:00 | 170 |  |  | 4.96 |  | Not Visible
 | 2004-09-06 00:00:00 | 100 |  |  | 25.71 |  |  | 2004-09-06 00:00:00 | 130 |  |  | 11.7 |  |  | 2004-09-06 00:00:00 | 170 |  |  | 8.27 |  | Not Visible
 | 2004-10-07 00:00:00 | 110 |  |  | 36.96 |  |  | 2004-10-07 00:00:00 | 200 |  |  | 69.6 |  |  | 2004-10-07 00:00:00 | 140 |  |  | 16.82 |  | Not Visible
 | 2004-11-10 00:00:00 | 130 |  |  | 51.9 |  |  | 2004-11-10 00:00:00 | 180 |  |  | 85.32 |  |  | 2004-11-10 00:00:00 | 170 |  |  | 9.09 |  | Not Visible
 | 2004-12-08 00:00:00 | 130 | 0.4 | 45129.3 | 18.05172 |  |  | 2004-12-08 00:00:00 | 130 | 0.53 | 90000 | 47.7 |  |  | 2004-12-08 00:00:00 | 150 | 0.27 | 35343 | 9.542610000000002 |  | Not Visible
 | 2005-01-06 00:00:00 | 150 | 0.59 | 55276 | 32.61284 |  |  | 2005-01-06 00:00:00 | 170 | 0.75 | 102000 | 76.5 |  |  | 2005-01-06 00:00:00 | 150 | 0.45 | 35343 | 15.90435 |  | Not Visible
 | 2005-02-02 00:00:00 | 150 | 0.55 | 55276.4 | 30.40202 |  |  | 2005-02-02 00:00:00 | 150 | 0.68 | 90000 | 61.2 |  |  | 2005-02-02 00:00:00 | 170 | 0.56 | 35342.6 | 19.791856 |  | Not Visible
 | 2005-03-03 00:00:00 | 150 | 0.45 | 55276 | 24.8742 |  |  | 2005-03-03 00:00:00 | 180 | 0.52 | 108000 | 56.16 |  |  | 2005-03-03 00:00:00 | 180 | 0.44 | 44282 | 19.48408 |  | Not Visible
 | 2005-04-07 00:00:00 | 130 | 0.54 | 45129 | 24.36966 |  |  | 2005-04-07 00:00:00 | 150 | 0.47 | 90000 | 42.3 |  |  | 2005-04-07 00:00:00 | 180 | 0.4 | 44282 | 17.7128 |  | Not Visible
 | 2005-05-20 00:00:00 | 100 | 0.42 | 30974 | 13.00908 |  |  | 2005-05-20 00:00:00 | 110 | 0.36 | 66000 | 23.76 |  |  | 2005-05-20 00:00:00 | 150 | 0.34 | 35343 | 12.01662
 | 2005-06-11 00:00:00 | 150 | 0.4 | 55276 | 22.1104 |  |  | 2005-06-11 00:00:00 | 150 | 0.38 | 90000 | 34.2 |  |  | 2005-06-11 00:00:00 | 180 | 0.35 | 26403 | 9.24105
 | 2005-07-16 00:00:00 | 100 | 0.42 | 30975 | 13.0095 |  |  | 2005-07-16 00:00:00 | 120 | 0.53 | 72000 | 38.16 |  |  | 2005-07-16 00:00:00 | 180 | 0.35 | 26403 | 9.24105
 | 2005-09-12 00:00:00 | 110 | 0.44 | 35534 | 15.63496 |  |  | 2005-09-12 00:00:00 | 150 | 0.44 | 90000 | 39.6 |  |  | 2005-09-12 00:00:00 | 190 | 0.43 | 23486 | 10.09898
 | 2005-10-22 00:00:00 | 100 | 0.6 | 30975 | 18.585 |  |  | 2005-10-22 00:00:00 | 100 | 0.3 | 60000 | 18 |  |  | 2005-10-22 00:00:00 | 200 | 0.35 | 50060 | 17.521
 | 2005-11-12 00:00:00 | 120 | 0.66 | 40256 | 26.56896 |  |  | 2005-11-12 00:00:00 | 300 | 0.74 | 180000 | 133.2 |  |  | 2005-11-12 00:00:00 | 180 | 0.4 | 26403 | 10.5612
 | 2005-12-20 00:00:00 | 120 | 0.68 | 40256 | 27.37408 |  |  | 2005-12-20 00:00:00 | 260 | 0.54 | 156000 | 84.24000000000001 |  |  | 2005-12-20 00:00:00 | 180 | 0.34 | 26403 | 8.97702
 | 2006-02-04 00:00:00 | 110 | 0.66 | 35534 | 23.45244 |  |  | 2006-02-04 00:00:00 | 210 | 0.46 | 126000 | 57.96 |  |  | 2006-02-04 00:00:00 | 180 | 0.45 | 26403 | 11.88135
 | 2006-03-04 00:00:00 | 80 | 0.45 | 22411 | 10.08495 |  |  | 2006-03-04 00:00:00 | 210 | 0.42 | 126000 | 52.91999999999999 |  |  | 2006-03-04 00:00:00 | 180 | 0.35 | 26403 | 9.24105
 | 2006-04-13 00:00:00 | 76 | 0.76 | 30975 | 23.541 |  |  | 2006-04-13 00:00:00 | 210 | 0.49 | 126000 | 61.74 |  |  | 2006-04-13 00:00:00 | 190 | 0.15 | 23486 | 3.5229 | Reading would appear on the low side.
 | 2006-05-11 00:00:00 | 120 | 0.94 | 40256 | 37.84064 |  |  | 2006-05-11 00:00:00 | 210 | 0.48 | 126000 | 60.48 |  |  | 2006-05-11 00:00:00 | 170 | 0.22 | 15132 | 3.32904
 | 2006-06-09 00:00:00 | 120 | 0.82 | 40256 | 33.00992 |  |  | 2006-06-09 00:00:00 | 230 | 0.51 | 138000 | 70.38 |  |  | 2006-06-09 00:00:00 | 120 | 0.47 | 26403 | 12.40941 | Reading would appear on the low side
 | 2006-07-14 00:00:00 | 120 | xxxx |  | #N/A | Erroneous reading |  | 2006-07-14 00:00:00 | 210 | 0.51 | 126000 | 64.26 |  |  | 2006-07-14 00:00:00 | 170 | 0.24 | 29360 | 7.046399999999999 | Reading would appear on the low side
 | 2006-10-17 00:00:00 | 90 | 0.7 | 26594 | 18.6158 |  |  | 2006-10-17 00:00:00 | 150 | 0.38 | 90000 | 34.2 |  |  | 2006-10-17 00:00:00 | 190 | 0.33 | 23486 | 7.750380000000001
 | 2006-11-16 00:00:00 | 130 | 0.54 | 45129 | 24.36966 |  |  | 2006-11-16 00:00:00 | 220 | 0.69 | 132000 | 91.08 |  |  | 2006-11-16 00:00:00 | 180 | 0.4 | 26403 | 10.5612
 | 2006-12-19 00:00:00 | 120 | 0.68 | 40256 | 27.37408 |  |  | 2006-12-19 00:00:00 | 230 | 0.7 | 138000 | 96.6 |  |  | 2006-12-19 00:00:00 | 190 | 0.52 | 23486 | 12.21272
 | 2007-01-18 00:00:00 | 160 | 0.65 | 60529 | 39.34385 |  |  | 2007-01-18 00:00:00 | 190 | 0.73 | 114000 | 83.22 |  |  | 2007-01-18 00:00:00 | 200 | 0.35 | 50060 | 17.521
 | 2007-02-15 00:00:00 | 150 | 0.42 | 55276 | 23.21592 |  |  | 2007-02-15 00:00:00 | 170 | 0.7 | 102000 | 71.39999999999999 |  |  | 2007-02-15 00:00:00 | 180 | 0.43 | 26403 | 11.35329
 | 2007-03-22 00:00:00 | 140 | 0.38 | 50140 | 19.0532 |  |  | 2007-03-22 00:00:00 | 150 | 0.42 | 90000 | 37.8 |  |  | 2007-03-22 00:00:00 | 170 | 0.47 | 15132 | 7.112039999999999
 | 2007-04-24 00:00:00 | 130 | 0.54 | 45129 | 24.36966 |  |  | 2007-04-24 00:00:00 | 160 | 0.42 | 96000 | 40.32 |  |  | 2007-04-24 00:00:00 | 160 | 0.4 | 38340 | 15.336
 | 2007-05-25 00:00:00 | 110 | 0.46 | 35534 | 16.34564 |  |  | 2007-05-25 00:00:00 | 150 | 0.38 | 90000 | 34.2 |  |  | 2007-05-25 00:00:00 | 170 | 0.52 | 15132 | 7.86864
 | 2007-06-28 00:00:00 | 160 | 0.67 | 50140 | 33.5938 |  |  | 2007-06-28 00:00:00 | 180 | 0.76 | 108000 | 82.08 |  |  | 2007-06-28 00:00:00 | 190 | 0.53 | 23486 | 12.44758
 | 2007-08-07 00:00:00 | 80 | 0.78 | 22411 | 17.48058 |  |  | 2007-08-07 00:00:00 | 210 | 0.63 | 126000 | 79.38 |  |  | 2007-08-07 00:00:00 | 180 | 0.33 | 26403 | 8.71299
 | 2007-09-06 00:00:00 | 90 | 0.7 | 26594 | 18.6158 |  |  | 2007-09-06 00:00:00 | 190 | 0.68 | 114000 | 77.52000000000001 |  |  | 2007-09-06 00:00:00 | 180 | 0.36 | 26403 | 9.50508
 | 2007-10-18 00:00:00 | 80 | 0.7 | 22411 | 15.6877 |  |  | 2007-10-18 00:00:00 | 190 | 0.73 | 114000 | 83.22 |  |  | 2007-10-18 00:00:00 | 190 | 0.51 | 23486 | 11.97786
 | 2007-11-23 00:00:00 | 80 | 0.69 | 22411 | 15.46359 |  |  | 2007-11-23 00:00:00 | 0 | 0.05 | 0 | 0 | negligable flow obseved |  | 2007-11-23 00:00:00 | 100 | 0.34 | 20625 | 7.0125
 | 2007-11-27 00:00:00 | 70 | 1.071 | 18442 | 19.751382 |  |  | 2007-11-27 00:00:00 | 60 | 0.063 | 36000 | 2.268 | negligable flow obseved |  | 2007-11-27 00:00:00 | 190 | 0.315 | 23486 | 7.39809
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