019001 Almond at Craigiehall 2000
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 6.296 53.130 9.944 2.242 4.797 2.522 0.993 3.844 4.899 3.663 20.780 8.409
2 6.011 15.810 30.390 3.486 4.019 1.985 1.013 11.630 4.543 3.592 9.031 8.124
3 11.830 10.520 15.730 3.404 3.521 2.091 0.999 5.323 3.213 4.318 6.554 6.118
4 27.750 14.530 8.763 3.207 3.173 2.823 1.027 2.543 2.535 4.859 5.323 8.344
5 22.190 10.180 8.915 2.934 2.886 1.816 1.423 1.892 2.344 4.026 5.419 11.660
6 12.530 9.723 11.420 2.678 2.704 2.768 1.569 1.656 6.683 3.427 115.000 21.060
7 22.920 12.380 14.800 2.452 2.518 2.754 1.480 1.562 7.088 8.075 109.700 15.240
8 15.570 12.960 27.120 2.225 2.403 3.129 2.114 1.533 4.670 7.153 26.460 52.150
9 11.120 17.050 20.190 2.072 2.322 4.026 9.154 2.482 3.215 31.740 13.400 21.370
10 12.610 28.730 12.770 2.052 2.212 4.152 6.185 1.868 2.731 17.860 9.777 12.390
11 10.020 15.100 8.232 3.889 2.147 3.350 2.491 1.599 22.110 14.940 18.700 10.280
12 8.578 22.910 6.130 25.370 2.085 2.932 1.843 1.494 32.490 12.060 27.200 20.750
13 6.869 15.510 5.414 15.360 1.969 3.627 1.619 4.470 8.956 7.549 17.690 17.160
14 5.508 25.110 4.674 7.953 1.938 2.063 1.452 6.846 5.217 6.002 9.894 10.070
15 4.699 15.920 3.986 4.947 2.543 1.619 1.333 2.695 4.039 4.904 8.359 7.174
16 4.308 11.340 3.578 3.814 2.594 1.377 1.270 2.587 3.274 4.263 10.050 5.711
17 4.205 9.473 3.301 7.831 2.816 1.321 1.249 2.403 3.743 4.123 7.261 4.955
18 4.000 20.140 3.054 7.337 2.116 1.246 1.207 2.625 9.612 4.162 11.850 4.556
19 3.633 11.820 2.897 5.010 2.139 1.193 1.199 4.399 10.250 3.561 9.288 4.943
20 3.383 7.953 2.800 4.319 2.206 1.167 1.173 3.053 30.050 4.131 6.631 7.894
21 3.210 6.927 2.683 3.457 1.902 1.296 1.226 3.919 8.766 3.881 5.442 5.817
22 3.070 5.854 2.599 3.053 1.843 1.390 1.221 3.877 17.070 3.442 7.800 4.823
23 2.802 6.564 3.037 3.269 1.912 1.203 1.261 2.449 8.037 4.853 7.298 4.424
24 2.680 15.800 2.916 7.401 2.006 1.110 1.299 2.012 6.317 16.460 5.886 5.166
25 2.525 13.540 2.643 46.440 1.969 1.047 1.298 1.979 11.790 34.220 9.086 5.712
26 2.513 11.100 2.421 125.400 1.958 1.039 1.274 2.722 16.380 9.491 10.620 4.956
27 4.957 53.130 2.256 36.760 2.552 1.051 2.245 2.784 18.690 8.370 8.581 4.008
28 29.580 26.890 2.140 13.840 2.435 1.053 4.408 3.996 10.590 17.090 22.900 3.583
29 27.410 19.350 2.082 8.402 2.683 1.035 2.270 2.574 6.073 44.560 15.840 3.126
30 59.660 2.234 6.036 2.009 1.035 1.466 2.798 4.403 12.510 8.737 2.865
31 56.690 2.203 1.835 2.762 3.384 13.390 4.846
Average 12.880 17.220 7.462 12.220 2.458 1.974 1.985 3.193 9.326 10.410 18.350 9.925
Lowest 2.513 5.854 2.082 2.052 1.835 1.035 0.993 1.494 2.344 3.427 5.323 2.865
Highest 59.660 53.130 30.390 125.400 4.797 4.152 9.154 11.630 32.490 44.560 115.000 52.150
Monthly total
(million cu m) 34.48 43.15 19.99 31.68 6.59 5.12 5.32 8.55 24.17 27.88 47.57 26.58
Runoff (mm) 93 117 54 86 18 14 14 23 66 76 129 72
Rainfall (mm) 136 129 59 134 38 47 74 100 132 126 143 88
Statistics of monthly data for previous record (Jan 1957 to Dec 1999)
Mean Avg. 10.180 8.246 7.003 4.515 3.301 2.548 2.459 3.045 4.328 6.622 9.088 9.978
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 16.640 21.660 20.570
(year) 1993 1990 1994 1986 1993 1966 1958 1985 1985 1998 1963 1999
Runoff: Avg. 74 54 51 32 24 18 18 22 30 48 64 72
Low 26 12 14 10 8 6 7 6 5 5 13 22
High 151 144 148 69 87 60 67 62 143 121 152 149
Rainfall: Avg. 87 64 72 53 61 62 72 80 86 93 91 92
Low 22 11 22 8 16 15 17 19 14 23 19 21
High 178 168 170 102 134 136 173 152 195 178 190 181
Summary statistics Factors affecting runoff
2000
For 2000 For record As % of $ Abstraction for public water supplies.
preceding 2000 pre-2000 $ Flow reduced by industrial and/or
Mean flow 8.888 5.935 150 agricultural abstractions.
Lowest yearly mean 2.890 1973 $ Augmentation from effluent returns.
Highest yearly mean 8.789 1998
Lowest monthly mean 1.974 Jun 0.668 Oct 1972
Highest monthly mean 18.350 Nov 22.010 Feb 1990
Lowest daily mean 0.993 1 Jul 0.241 9 Oct 1959
Highest daily mean 125.400 26 Apr 147.200 6 Oct 1990
10% exceedance 19.990 13.470 148
50% exceedance 4.379 2.991 146
95% exceedance 1.222 0.940 130
Annual total (million cu m) 281.10 187.30 150
Annual runoff (mm) 762 508 150
Annual rainfall (mm) 1206 913 132
{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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