019001 Almond at Craigiehall 2001
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 24.320 5.146 3.093 7.098 2.832 2.371 1.647 1.644 1.891 8.212 3.423 7.782
2 12.830 6.917 2.763 5.921 2.640 1.820 1.600 2.186 2.077 3.661 3.029 5.255
3 8.678 10.800 2.748 4.629 2.354 1.641 1.600 1.863 1.939 3.462 2.791 4.730
4 11.310 9.599 2.655 3.801 2.201 1.630 1.559 1.610 1.815 4.038 2.820 4.375
5 7.665 11.440 5.022 3.577 2.067 1.599 1.562 1.512 1.813 3.418 6.355 20.770
6 8.387 66.930 5.472 6.302 1.870 1.702 1.623 1.499 1.684 4.766 6.445 10.570
7 9.071 31.650 17.350 15.610 1.853 2.375 7.207 2.060 1.509 14.320 7.280 8.463
8 6.999 11.170 15.540 6.790 1.885 1.714 13.410 3.732 1.478 16.530 9.417 6.027
9 5.666 7.299 10.750 5.939 1.861 2.984 3.842 2.648 1.352 5.669 5.500 4.775
10 4.851 8.091 7.872 5.568 1.824 1.938 2.971 1.870 1.390 4.491 6.673 4.025
11 4.539 18.010 21.520 4.239 1.758 1.594 8.075 1.631 1.386 3.395 5.109 3.542
12 4.270 11.750 19.680 3.612 1.743 1.518 6.319 2.197 1.562 3.188 9.019 3.261
13 3.852 7.672 8.446 3.269 1.746 1.469 20.060 10.940 2.318 3.064 5.519 3.087
14 3.394 6.131 7.577 3.216 1.791 1.461 14.660 18.850 2.134 6.376 4.145 3.127
15 3.150 5.303 6.015 3.077 1.861 2.682 8.274 5.376 2.054 10.110 3.612 3.247
16 2.836 4.643 4.717 2.625 2.974 3.109 4.371 3.274 1.861 6.516 3.283 5.493
17 2.717 4.105 4.406 3.198 5.049 1.957 3.101 2.472 1.747 4.137 3.041 5.337
18 2.664 3.846 5.892 2.801 3.330 1.626 2.570 3.553 1.566 5.256 4.876 4.269
19 2.608 3.848 5.327 2.427 2.293 1.906 2.308 46.160 1.700 4.463 10.610 3.812
20 2.603 3.631 4.727 2.223 2.010 2.426 2.392 24.940 1.665 6.763 6.436 3.473
21 2.666 3.374 4.228 2.260 1.892 1.817 2.283 7.053 1.572 23.680 7.294 4.149
22 3.039 3.254 3.855 3.509 1.821 1.511 1.929 4.113 1.407 19.970 5.961 3.286
23 4.215 2.955 5.589 4.839 1.794 1.400 1.825 3.090 1.342 13.670 4.342 3.008
24 18.260 2.741 5.782 3.762 1.755 1.360 1.875 2.654 1.517 10.240 4.241 3.433
25 8.195 2.657 6.896 7.749 1.776 1.343 1.650 2.641 1.639 11.050 5.489 3.220
26 6.467 3.502 5.816 11.280 1.714 3.220 1.557 2.322 1.569 8.216 4.420 2.799
27 5.068 3.154 4.744 6.237 1.694 2.163 1.557 2.136 1.533 5.406 8.706 4.492
28 3.989 3.301 7.281 5.477 1.734 1.973 1.500 2.046 1.804 4.429 8.028 6.342
29 3.462 8.769 4.029 1.867 2.155 1.512 2.103 3.722 3.972 9.241 3.962
30 3.701 6.579 3.303 2.917 1.931 2.440 2.481 6.082 3.983 9.597 2.830
31 3.614 10.120 2.159 2.184 1.999 4.510 2.519
Average 6.293 9.390 7.459 4.946 2.163 1.946 4.176 5.570 1.904 7.450 5.890 5.015
Lowest 2.603 2.657 2.655 2.223 1.694 1.343 1.500 1.499 1.342 3.064 2.791 2.519
Highest 24.320 66.930 21.520 15.610 5.049 3.220 20.060 46.160 6.082 23.680 10.610 20.770
Monthly total
(million cu m) 16.86 22.72 19.98 12.82 5.79 5.04 11.19 14.92 4.94 19.96 15.27 13.43
Runoff (mm) 46 62 54 35 16 14 30 40 13 54 41 36
Rainfall (mm) 35 80 59 59 36 64 95 100 57 105 71 40
Statistics of monthly data for previous record (Jan 1957 to Dec 2000)
Mean Avg. 10.250 8.450 7.014 4.691 3.282 2.535 2.448 3.049 4.442 6.708 9.298 9.976
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 12.220 12.030 8.572 9.223 8.568 20.360 16.640 21.660 20.570
(year) 1993 1990 1994 2000 1993 1966 1958 1985 1985 1998 1963 1999
Runoff: Avg. 74 56 51 33 24 18 18 22 31 49 65 72
Low 26 12 14 10 8 6 7 6 5 5 13 22
High 151 144 148 86 87 60 67 62 143 121 152 149
Rainfall: Avg. 88 66 71 55 60 62 72 80 87 94 92 92
Low 22 11 22 8 16 15 17 19 14 23 19 21
High 178 168 170 134 134 136 173 152 195 178 190 181
Summary statistics Factors affecting runoff
2001
For 2001 For record As % of $ Abstraction for public water supplies.
preceding 2001 pre-2001 $ Flow reduced by industrial and/or
Mean flow 5.166 6.002 86 agricultural abstractions.
Lowest yearly mean 2.890 1973 $ Augmentation from effluent returns.
Highest yearly mean 8.888 2000
Lowest monthly mean 1.904 Sep 0.668 Oct 1972
Highest monthly mean 9.390 Feb 22.010 Feb 1990
Lowest daily mean 1.342 23 Sep 0.241 9 Oct 1959
Highest daily mean 66.930 6 Feb 147.200 6 Oct 1990
10% exceedance 10.150 13.630 74
50% exceedance 3.446 3.012 114
95% exceedance 1.522 0.944 161
Annual total (million cu m) 162.90 189.40 86
Annual runoff (mm) 442 513 86
Annual rainfall (mm) 801 919 87
{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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