019001 Almond at Craigiehall 1997
Measuring authority: SEPA Grid reference: 36 (NT) 165 752 Catchment area (sq km): 369.0
First year: 1957 Level stn. (m OD): 22.80 Max alt. (m OD): 518
Daily mean gauged discharges (cubic metres per second)
DAY JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
1 2.743 2.051 37.210 2.348 1.059 1.108 34.300 2.212 1.443 1.382 1.424 5.433
2 2.985 2.332 24.020 2.094 0.930 1.120 10.520 1.820 1.278 1.332 1.461 4.128
3 3.669 8.166 13.390 1.853 1.090 1.051 16.930 1.463 2.108 1.260 1.448 3.479
4 3.522 8.638 9.204 1.761 32.820 0.991 7.587 1.287 1.542 1.329 1.458 3.190
5 3.298 5.205 7.774 2.061 23.810 1.176 4.372 1.226 1.331 1.547 3.116 3.071
6 3.004 5.381 6.555 1.636 9.248 1.325 3.305 1.112 1.273 1.724 3.639 6.524
7 2.911 4.252 5.928 1.591 7.150 1.247 2.996 1.134 1.265 1.554 2.678 5.821
8 2.956 4.444 5.258 1.536 7.474 1.391 2.530 1.098 1.296 1.751 6.722 16.610
9 3.385 8.991 4.664 1.454 4.942 1.162 2.136 1.083 1.254 5.799 6.230 17.780
10 3.157 32.600 4.292 1.401 4.031 1.151 1.843 1.132 1.246 11.720 4.057 26.380
11 12.000 29.510 3.792 1.266 6.588 6.659 1.719 1.423 1.273 4.154 4.395 65.480
12 17.270 41.760 3.511 1.138 7.338 7.645 1.573 1.242 1.429 2.671 3.459 16.830
13 8.184 19.020 3.908 1.141 9.399 5.463 1.964 17.360 1.330 2.164 2.976 11.230
14 5.756 9.769 4.346 1.151 7.707 8.218 1.695 10.100 1.528 2.627 2.791 7.887
15 4.576 6.838 5.576 1.109 4.199 4.454 1.701 3.342 2.103 3.190 3.557 6.114
16 3.953 6.484 9.188 1.092 3.112 3.070 1.801 2.154 9.318 7.128 4.703 5.286
17 3.844 37.530 6.486 1.065 4.904 2.281 1.648 1.745 4.861 7.537 4.537 4.582
18 3.684 26.250 7.334 1.070 6.107 1.943 1.522 1.401 2.625 6.286 5.578 7.385
19 3.434 42.370 6.690 1.043 5.623 3.095 1.457 1.241 2.076 4.026 4.589 14.830
20 3.056 65.850 4.491 0.958 21.410 4.925 1.552 1.220 1.762 3.002 4.516 25.300
21 2.891 33.110 3.478 1.067 11.510 15.860 1.770 1.377 1.676 2.462 9.490 10.930
22 2.866 15.280 3.262 0.998 5.891 18.920 1.843 1.182 1.532 2.153 4.805 7.730
23 2.547 15.480 3.480 2.113 3.689 7.902 2.151 1.075 1.314 1.909 3.575 8.463
24 2.490 12.580 4.202 3.381 2.661 4.286 2.152 1.056 1.280 1.715 3.661 13.050
25 2.394 9.794 3.525 1.673 2.209 3.238 1.634 1.138 1.267 1.565 3.305 34.310
26 2.348 8.005 4.302 1.235 1.992 2.876 1.631 1.078 1.211 1.564 3.081 18.800
27 2.285 12.100 11.510 1.142 1.675 3.018 1.821 1.806 1.220 1.530 3.959 9.825
28 2.128 12.390 7.272 1.875 1.415 5.611 2.100 1.257 1.279 1.465 4.002 7.614
29 2.097 4.073 1.467 1.282 3.719 2.321 1.185 1.375 1.421 20.400 6.238
30 2.072 3.116 1.140 1.165 7.224 2.336 1.087 1.354 1.469 9.544 7.227
31 2.008 2.700 1.121 2.222 1.239 1.425 7.022
Average 3.984 17.360 7.243 1.495 6.566 4.404 4.037 2.202 1.862 2.931 4.639 12.530
Lowest 2.008 2.051 2.700 0.958 0.930 0.991 1.457 1.056 1.211 1.260 1.424 3.071
Highest 17.270 65.850 37.210 3.381 32.820 18.920 34.300 17.360 9.318 11.720 20.400 65.480
Monthly total
(million cu m) 10.67 42.01 19.40 3.88 17.59 11.42 10.81 5.90 4.82 7.85 12.02 33.57
Runoff (mm) 29 114 53 11 48 31 29 16 13 21 33 91
Rainfall (mm) 22 168 63 31 111 134 49 43 49 55 75 120
Statistics of monthly data for previous record (Jan 1957 to Dec 1996)
Mean Avg. 10.140 8.034 7.033 4.506 3.215 2.371 2.297 3.026 4.431 6.540 9.043 9.633
flows: Low 3.574 1.782 1.918 1.410 1.091 0.817 0.950 0.869 0.668 0.668 1.862 3.016
(year) 1963 1963 1973 1974 1961 1961 1960 1983 1959 1972 1972 1975
High 20.820 22.010 20.450 9.841 12.030 8.572 9.223 8.568 20.360 15.120 21.660 19.860
(year) 1993 1990 1994 1986 1993 1966 1958 1985 1985 1981 1963 1986
Runoff: Avg. 74 53 51 32 23 17 17 22 31 47 64 70
Low 26 12 14 10 8 6 7 6 5 5 13 22
High 151 144 148 69 87 60 67 62 143 110 152 144
Rainfall: Avg. 87 61 72 53 59 59 71 81 87 93 90 90
Low 28 11 22 8 16 15 17 19 14 23 19 21
High 178 167 170 89 134 136 173 152 195 177 190 181
Summary statistics Factors affecting runoff
1997
For 1997 For record As % of $ Abstraction for public water supplies.
preceding 1997 pre-1997 $ Flow reduced by industrial and/or
Mean flow 5.706 5.848 98 agricultural abstractions.
Lowest yearly mean 2.890 1973 $ Augmentation from effluent returns.
Highest yearly mean 8.199 1986
Lowest monthly mean 1.495 Apr 0.668 Oct 1972
Highest monthly mean 17.360 Feb 22.010 Feb 1990
Lowest daily mean 0.930 2 May 0.241 9 Oct 1959
Highest daily mean 65.850 20 Feb 147.200 6 Oct 1990
10% exceedance 12.130 13.230 92
50% exceedance 3.029 2.917 104
95% exceedance 1.102 0.920 120
Annual total (million cu m) 179.90 184.50 98
Annual runoff (mm) 488 500 98
Annual rainfall (mm) 920 903 102
{1961-90 rainfall average (mm) 896}
Station and catchment description
Recorder is well sited on straight even reach with steep banks containing all recorded floods. Stable rating. Weed growth
in summer - some adjustment to stage required. Low flows substantially affected by sewage effluent esp. from Mid Calder
and Newbridge STW and six smaller STWs. Abstraction at Almondell to feed a canal. A number of storage reservoirs are
situated in the catchment.
Geology: predominantly Carboniferous rocks. Land use: rural, with extensive urban development around Livingston, esp.
industrial estates, and several small mining towns.
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