019001 Almond at Craigiehall 1996
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 4.903 2.097 3.377 1.631 11.950 2.040 2.468 0.979 1.709 1.216 5.269 24.560
2 6.027 2.065 3.128 1.656 7.994 1.783 1.778 0.980 1.583 1.142 11.430 25.780
3 5.911 1.912 3.007 1.575 4.602 2.021 3.301 0.875 1.487 2.267 17.700 35.160
4 6.092 1.873 2.945 1.582 3.349 1.882 2.633 0.913 1.445 2.808 11.310 32.660
5 6.883 2.043 2.676 1.492 3.337 1.870 1.849 0.960 1.382 1.972 15.540 15.570
6 6.893 2.229 2.245 1.383 3.152 1.660 1.437 0.975 1.340 1.502 30.550 8.937
7 7.133 2.081 2.146 1.367 2.696 1.588 1.431 1.068 1.243 1.400 19.360 15.740
8 7.049 2.018 2.075 1.397 2.344 1.462 1.372 0.984 1.249 1.294 9.261 25.350
9 7.166 4.768 2.002 1.445 2.055 1.440 1.359 0.996 1.294 1.183 8.276 11.630
10 7.695 22.860 1.854 2.352 2.165 1.721 1.435 2.654 1.370 1.161 5.732 7.706
11 6.138 16.400 2.922 1.721 3.800 2.907 1.459 1.251 1.427 1.407 5.273 6.169
12 5.679 28.210 11.020 1.506 2.677 2.629 1.465 1.071 1.346 8.029 5.237 5.375
13 5.812 10.800 5.991 1.372 2.278 1.914 1.451 1.032 1.166 4.723 4.254 4.548
14 4.742 6.375 4.019 1.578 1.983 1.601 1.518 1.095 1.121 3.785 4.522 4.165
15 3.934 5.236 3.423 1.688 1.864 1.405 1.496 1.114 1.136 11.210 3.941 4.087
16 3.502 7.594 3.370 1.729 1.737 1.386 1.501 1.071 1.140 7.313 4.834 4.001
17 3.278 11.830 3.604 1.787 1.689 1.402 1.571 1.028 1.053 5.147 10.320 4.121
18 3.009 15.930 3.390 3.749 1.803 1.362 1.699 1.077 1.069 3.715 5.946 51.100
19 2.755 7.728 2.951 5.270 2.459 1.360 1.762 1.237 1.039 3.803 5.667 25.950
20 2.427 5.180 2.683 6.050 2.380 1.330 1.539 1.748 1.020 3.248 5.206 11.450
21 2.224 4.910 2.644 6.879 2.194 1.282 1.870 3.623 1.088 3.046 11.020 7.433
22 2.203 6.642 2.334 5.984 2.028 1.188 1.896 1.709 1.009 2.356 11.290 5.776
23 2.112 7.194 2.105 11.320 2.051 1.190 4.124 1.764 1.061 2.098 7.052 4.790
24 2.018 8.612 1.970 9.914 1.899 1.287 2.982 4.494 1.094 5.187 7.853 4.209
25 1.895 8.742 2.034 5.841 1.722 1.208 1.439 1.853 1.127 9.260 14.610 3.826
26 1.929 6.087 1.957 5.467 2.046 1.249 1.285 1.476 1.054 4.886 10.110 3.511
27 2.138 4.709 1.865 4.996 1.848 1.278 1.068 1.617 1.099 6.509 6.140 3.587
28 2.328 4.050 1.946 3.493 2.574 1.373 1.286 1.506 1.776 35.970 10.570 3.301
29 2.087 3.691 1.887 3.046 3.058 1.206 1.539 1.416 1.627 15.920 19.950 3.298
30 1.969 1.600 2.858 3.040 1.342 1.164 1.348 1.178 7.015 17.250 3.142
31 2.078 1.567 2.566 1.034 1.357 7.016 2.958
Average 4.194 7.375 2.927 3.404 2.946 1.579 1.749 1.460 1.258 5.406 10.180 11.930
Lowest 1.895 1.873 1.567 1.367 1.689 1.188 1.034 0.875 1.009 1.142 3.941 2.958
Highest 7.695 28.210 11.020 11.320 11.950 2.907 4.124 4.494 1.776 35.970 30.550 51.100
Monthly total
(million cu m) 11.23 18.48 7.84 8.82 7.89 4.09 4.68 3.91 3.26 14.48 26.39 31.96
Runoff (mm) 30 50 21 24 21 11 13 11 9 39 72 87
Rainfall (mm) 28 66 26 65 60 31 67 47 28 134 119 88
Statistics of monthly data for previous record (Jan 1957 to Dec 1995)
Mean Avg. 10.290 8.051 7.138 4.535 3.221 2.391 2.311 3.066 4.512 6.569 9.014 9.574
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. 75 53 52 32 23 17 17 22 32 48 63 69
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. 88 61 73 52 59 60 71 82 89 92 89 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
1996
For 1996 For record As % of $ Abstraction for public water supplies.
preceding 1996 pre-1996 $ Flow reduced by industrial and/or
Mean flow 4.524 5.882 77 agricultural abstractions.
Lowest yearly mean 2.890 1973 $ Augmentation from effluent returns.
Highest yearly mean 8.199 1986
Lowest monthly mean 1.258 Sep 0.668 Oct 1972
Highest monthly mean 11.930 Dec 22.010 Feb 1990
Lowest daily mean 0.875 3 Aug 0.241 9 Oct 1959
Highest daily mean 51.100 18 Dec 147.200 6 Oct 1990
10% exceedance 10.060 13.360 75
50% exceedance 2.241 2.933 76
95% exceedance 1.069 0.916 117
Annual total (million cu m) 143.10 185.60 77
Annual runoff (mm) 388 503 77
Annual rainfall (mm) 759 906 84
{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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