Annex 1. Rod and Net Catches; and Juvenile Salmon and Trout Data

Annex 1. Rod and net catches; and juvenile salmon and trout data

This Annex presents an update – to include 2017 survey data - of Annex 3 of NRW’s Technical Case supporting proposals for new fishing controls to protect salmon and sea trout stocks in Wales. It provides a catchment by catchment summary of the net and rod catch statistics for the principal salmon and sea trout rivers. It also presents the results of the juvenile salmonid monitoring programme for the 32 surveyed catchments in Wales. A Wales-wide summary is also shown of the rod catches and juvenile salmonid populations and trends. Details of how these data are collected are given below.

Juvenile salmonid monitoring The monitoring programme comprises Temporal surveys - a number of fixed sites surveyed annually; and Spatial surveys – considerable more sites spread across the catchment and surveyed every 6 years as a “snapshot” of fish populations. The number of sites in the temporal and spatial programmes varies between catchments and is related to the size of the catchment. Densities calculated from quantitative (3 run catch depletion) and semi-quantitative (single run) surveys are used to analyse trends in time and identify differences between and within catchments across the country. Typically data are split into salmon fry (0+) and parr (>0+) and trout fry (0+) and >0+ (parr and adults combined) at each site.

Rod catch A national rod licence for salmon and migratory trout has been in place in E&W since 1994. This and an associated catch return and reminder system has operated since that time and is one of the most consistent and comprehensive catch recording systems in Europe. The national catch recording system replaces a series of regional and river-based systems of variable quality – some of which extend back to the 1900s or earlier. Rod catch records for salmon and sea trout given here are declared catches from licence returns and are not corrected for under-reporting. The exception to this is the river Wye, where owners’ returns are used due to a more complete record.

Know Your Rivers Reports For catchment specific information on fisheries statistics, including action plans, please refer to the Know Your Rivers reports on the Natural Resources Wales website.

2017 juvenile salmonid population survey results Routine monitoring in 2016 revealed fry numbers, especially young salmon hatched in the spring of 2016 at critically low levels on a number of principal catchments. These were rivers which had previously produced consistent salmon fry numbers. Numbers in 2017 were generally better than those seen in 2016 but were still poor across many catchments. The poor fry numbers in 2016 have also impacted on the salmon parr numbers in 2017. The maps (Figs 1a and 1b – salmon; 2a and 2b – trout) and Table 1 below show a comparison of these 2017 juvenile survey results as compared to the 5-year average. An average from 2011-2015 was used to account for poor fry numbers in 2016. Many of these catchments only have 1 or 2 survey sites, and so certainty around trends is reduced, for example on the Rhymney where any variation in the very low numbers of salmon caught may result in big percentage differences. There were high summer flows in North Wales in 2017, and as such, relatively few of the temporal sites were successfully surveyed.

Table 1 - 2017 juvenile salmon and trout results compared to the 5-year average. A figure of -100% indicates an average density of zero in a catchment where fish were present in the last 5 years.

Salmon Trout No. sites River surveyed 0+ >0+ 0+ >0+ (total no.) Aeron -86% -96% 12% -61% 2 (2) Afan 117% -67% 5% -65% 2 (2) Cleddau (East) -100% -100% -25% -25% 2 (2) Cleddau (West) -54% -65% -20% -23% 2 (2) Clwyd -91% -100% -9% -12% 3 (5) Conwy 37% -57% 172% -11% 4 (4) Dee -14% -58% 64% -24% 9 (11) Dwyfawr 0 (1) Dwyryd 0 (1) Dyfi -83% -100% 24% -48% 1 (4) Dysynni 0 (1) Ely -100% -97% 23% -78% 1 (1) Erch 0 (1) Glaslyn 0 (1) Gwendraeth -100% -100% -18% -38% 2 (2) Loughor 0% 0% 2% -62% 1 (1) Mawddach 0 (2) Neath -100% -100% 65% -42% 2 (2) Nevern -99% -100% 80% 56% 2 (2) Ogmore -86% -93% -67% -31% 2 (2) Ogwen 0 (1) Rheidol -100% 0% -63% -10% 1 (1) Rhymney 1503% 60% -8% -46% 2 (2) Seiont 0 (1) Severn 91% -34% 30% -42% 15 (16) Taf -73% -100% -23% -53% 4 (4) Taff -100% -84% -15% 61% 2 (2) Tawe -33% 13% 11% -53% 2 (2) Teifi -63% -63% 14% -52% 6 (6) Tywi -20% -69% -16% -47% 12 (12) Usk -57% -97% 1% -63% 13 (13) Wye -20% -53% 18% -27% 24 (24) Ystwyth -80% 120% -54% -35% 2 (2)

Figure 1a – Change in salmon fry density Figure 1b – Change in salmon parr density

Figure 2a – Change in trout fry density Figure 2b – Change in trout parr density All Wales

All Wales

Catchment population trends The graphs below show a simple comparison of average salmon and trout densities across the catchments since 2002. The data used are from all the temporal (annual) surveys in the current Welsh monitoring programme; although it is not necessarily the case that every site in the programme was done every year.

A linear trend analysis was carried out and a statistical significance attached. The linear model fits a straight line to the data to determine whether a trend (upwards or downwards) is present in fish numbers over the timeframe. The statistical significance of the trend is denoted by the P value, P<0.05 indicates statistical significance (where there is >95% confidence that the trend is not due to chance). The graphs presented show the trend line with associated confidence intervals. All Wales River Aeron

There is no salmon or sea trout net fishery on the Aeron River Aeron

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Site Average 2016 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Aeron - 58.7 0.0 65.9 4.8 10.0 10.8 20.0 2.9 0.0 0.8 1.4 2.1 1.4 0.4 30.9 3.9 0% -83% -95% -91% AE01 Aeron - 0.8 2.8 16.3 4.1 15.5 8.4 1.9 5.7 5.9 0.0 1.2 2.0 4.2 0.0 8.1 4.2 247% -100% -49% -100% AE02 Average 29.8 1.4 41.1 4.5 12.8 9.6 10.9 4.3 2.9 0.4 1.3 2.0 2.8 0.2 19.5 4.0 114% -91% -86% -96%

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2011-2015) average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Aeron - 40.0 4.5 13.3 10.9 42.5 16.7 35.7 11.4 41.7 2.5 16.1 5.6 44.4 3.2 34.6 9.2 176% -44% 28% -66% AE01 Aeron - 43.6 8.0 12.9 8.2 34.7 5.6 45.3 8.3 27.5 9.0 7.2 11.6 31.2 3.5 32.8 7.8 334% -70% -5% -56% AE02 Average 41.8 6.3 13.1 9.5 38.6 11.1 40.5 9.9 34.6 5.8 11.6 8.6 37.8 3.3 33.7 8.5 225% -61% 12% -61%

River Afan

There is no salmon or sea trout net fishery on the Afan River Afan

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2)

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from 5 Site Average (2011- from 2016 year average 2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Afan - 0.0 10.9 5.0 1.8 0.0 22.8 3.5 6.3 6.2 10.1 2.1 12.9 8.0 4.5 2.9 10.4 281% -65% 172% -57% AF05 Pelenna - 0.0 3.0 0.0 0.2 0.0 0.0 0.0 0.0 0.5 0.0 0.0 1.1 + 0% + -100% AF01 Average 0.0 10.9 5.0 1.8 0.0 12.9 1.8 3.3 3.1 5.0 1.1 6.4 4.3 2.3 2.0 6.8 307% -65% 117% -67%

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2011-2015) average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Afan - 11.3 21.5 10.0 10.0 15.2 15.2 39.7 11.4 5.5 32.8 5.3 15.0 23.6 9.3 16.4 18.2 348% -38% 44% -49% AF05 Pelenna - 7.5 14.5 12.4 5.8 22.7 14.5 0.6 12.6 7.0 1.9 14.2 11.6 1094% -85% -51% -84% AF01 Average 11.3 21.5 10.0 10.0 11.4 14.9 26.1 8.6 14.1 23.7 2.9 13.8 15.3 5.6 14.6 15.7 423% -60% 5% -65% River Cleddau

River Cleddau

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from 5 Average from 2016 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Afon Rhyd 0.0 1.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0% 0% 0% -100% Afallen - EC08 Wern - EC06 0.0 9.1 0.0 1.3 3.9 5.6 4.1 1.2 0.0 0.0 0.0 0.0 2.0 4.3 0% 0% -100% -100% Average 0.0 5.1 0.0 0.7 1.9 2.8 2.0 0.6 0.0 0.0 0.0 0.0 1.0 2.3 0% 0% -100% -100% Anghof - 8.4 7.2 7.5 12.9 2.7 11.0 3.7 6.6 3.6 6.5 2.9 2.6 5.6 9.4 -20% -61% -49% -73% WC07A Trerhos - 0.5 12.2 0.0 3.7 2.1 1.4 0.0 4.4 0.0 3.7 0.0 2.6 0.7 5.4 0% -29% -100% -52% WC17 Average 4.5 9.7 3.8 8.3 2.4 6.2 1.9 5.5 1.8 5.1 1.4 2.6 3.1 7.4 -20% -49% -54% -65%

River Cleddau

Juvenile trout densities 2011 to 2017 (fish per 100m2)

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from Average from 2016 5 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Afon Rhyd 2.2 14.4 42.4 18.2 27.0 32.0 30.6 21.3 3.3 15.0 11.5 15.6 25.6 21.4 246% 4% -55% -27% Afallen - EC08 Wern - 9.7 10.3 18.8 8.7 4.4 21.7 20.8 9.0 8.9 5.9 17.6 9.7 13.4 12.4 98% 64% 31% -22% EC06 Average 5.9 12.3 30.6 13.5 15.7 26.8 25.7 15.1 6.1 10.5 14.5 12.7 19.5 16.9 139% 21% -25% -25% Anghof - 5.0 4.4 2.1 11.1 9.0 12.0 11.7 4.3 1.2 8.0 5.1 3.7 7.0 8.0 332% -54% -26% -53% WC07A Trerhos - 7.9 13.8 19.4 17.6 22.1 16.4 8.8 11.7 0.0 8.0 12.2 13.9 14.6 14.9 + 74% -16% -6% WC17 Average 6.5 9.1 10.8 14.4 15.6 14.2 10.3 8.0 0.6 8.0 8.7 8.8 10.8 11.4 1356% 10% -20% -23%

River Clwyd

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from 5 Site Average from 2016 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Aled - 1 14.8 2.7 71.0 2.0 6.8 4.0 4.1 2.0 0.0 0.4 24.2 2.7 Clwyd - 9 1.7 9.3 13.6 4.5 4.0 12.0 0.0 5.8 0.0 1.1 0.0 0.0 4.8 7.9 0% -100% -100% -100% Clywedog 59.3 4.5 47.1 8.1 0.3 8.0 2.7 1.8 0.0 0.0 4.2 0.0 27.4 5.6 + 0% -85% -100% - 14 Elwy - 111 2.6 4.1 11.1 1.7 5.7 1.4 10.4 0.5 0.0 0.7 7.5 1.9 Ystrad - 15.5 0.0 28.6 1.4 0.0 1.6 0.0 1.0 0.0 0.0 0.0 0.0 11.0 1.0 0% 0% -100% -100% 109 Average 18.8 4.1 34.3 3.5 3.4 5.4 3.4 2.2 0.0 0.4 1.4 0.0 15.0 3.8 + -100% -91% -100%

River Clwyd

Juvenile trout densities 2011 to 2017 (fish per 100m2)

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from Site Average from 2016 5 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Aled - 1 19.0 1.3 8.9 1.4 17.0 1.6 62.7 2.9 0.5 1.4 26.9 1.8 Clwyd - 9 22.7 5.2 14.2 8.5 14.0 9.0 119.2 16.3 2.8 14.4 27.6 10.5 42.5 9.8 895% -27% -35% 8% Clywedog 8.1 6.0 18.2 5.5 23.3 10.3 74.4 9.6 7.7 10.3 17.2 4.5 31.0 7.9 125% -56% -44% -42% - 14

Elwy - 111 11.5 2.8 9.6 1.4 24.4 2.2 39.3 0.7 0.7 3.5 21.2 1.8 Ystrad - 26.2 3.0 9.1 11.4 67.2 6.3 124.0 11.5 8.4 3.1 52.7 0.4 56.6 8.0 526% -86% -7% -94% 109 Average 17.5 3.6 12.0 5.6 29.2 5.9 83.9 8.2 4.0 6.5 32.5 5.2 35.7 5.8 710% -21% -9% -12% River Conwy

River Conwy

Juvenile salmon densities 2011 to 2017 (fish per 100m2)

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2012-2016) average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Lledr - 19 7.0 3.5 12.8 13.2 38.2 3.5 30.3 6.1 5.6 7.4 29.6 6.2 22.1 6.6 433% -16% 34% -5% Merddwr 49.2 6.6 74.2 4.6 120.6 12.8 60.2 2.3 15.3 1.4 82.6 1.7 76.0 6.6 440% 19% 9% -75% - 39.1 Nant Y 23.1 8.8 46.4 23.6 23.3 8.7 16.5 11.4 1.1 13.7 71.4 4.2 27.3 13.1 6686% -69% 161% -68% Goron - 3 Roe - 10 22.4 7.0 16.2 10.1 2.8 0.7 0.0 2.2 5.7 0.0 2.1 1.4 10.3 5.0 -64% + -80% -73% Average 25.4 6.5 37.4 12.9 46.2 6.4 26.8 5.5 6.9 5.6 46.4 3.4 33.9 7.8 574% -40% 37% -57%

River Conwy

Juvenile trout densities 2011 to 2017 (fish per 100m2)

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from Site Average from 2016 5 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Lledr - 19 7.0 0.4 4.3 1.9 9.5 0.9 5.2 1.3 7.0 1.9 11.3 2.3 6.5 1.1 61% 26% 74% 108% Merddwr - 11.1 3.5 7.9 4.6 20.3 12.4 6.4 3.0 1.4 0.0 8.7 1.7 11.4 5.9 524% + -24% -72% 39.1 Nant Y 8.8 3.8 6.4 7.9 20.0 1.3 44.9 6.3 13.7 4.7 88.4 7.4 20.0 4.8 546% 56% 341% 54% Goron - 3 Roe - 10 61.5 9.1 16.9 4.7 46.2 9.1 53.2 18.0 61.6 9.9 115.4 8.2 44.4 10.2 87% -17% 160% -19% Average 22.1 4.2 8.9 4.8 24.0 5.9 27.4 7.1 20.9 4.1 55.9 4.9 20.6 5.5 167% 19% 172% -11% River Dee

River Dee

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2011- average 2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ + Abbey 35.3 4.7 44.0 13. 94. 13. 53. 2.9 11.9 4.0 43.8 0.6 56. 8.4 268% -86% -23% -93% Brook - 1 9 0 5 9 34 Ceidiog - 15.9 1.5 88.8 2.8 15. 2.8 45. 6.7 20.0 11. 15.9 2.7 41. 3.5 -20% -78% -61% -23% 17 2 5 9 3 Ceiriog - 123. 15. 34.0 14. 58. 37. 11. 11. 3.4 10. 21.2 4.6 56. 19. 528% -55% -63% -76% 57 2 6 0 7 0 3 3 4 8 5 Ceirw - 35.0 15. 84.4 24. 29. 17. 79. 13. 4.0 10. 56. 17. 283 5 0 2 0 2 9 9 9 6 Clywedog 6.9 14. 7.5 13. 5.3 2.9 5.4 3.4 0.0 2.0 23.8 0.0 6.3 8.5 + - 279% - - 284 2 7 100% 100% Hirnant - 19.3 11. 88.1 3.2 31. 5.7 79.4 10. 109. 14. 46. 6.7 38% 43% 138% 120% 35 2 0 3 7 7 1 Little Dee 3.0 1.1 41.2 1.1 0.0 5.3 0.3 0.7 2.3 0.0 0.0 0.0 21.1 0.0 9.4 1.6 + 0% 125% - - 3 100% Meloch - 0.0 8.6 70.9 0.6 56.8 3.2 25. 5.0 48. 2.9 3.0 4.9 56.0 1.2 40. 4.0 1737 -75% 40% -69% 33 0 0 1 % River Dee

Merddwr - 0.0 10. 195. 3.4 140. 17. 28. 12. 58. 7.9 123. 9.0 84. 10. 13 0 5 6 5 3 8 5 9 6 3 Morwynio 0.0 0.8 2.6 11. 0.0 0.0 1.4 0.0 0.0 0.7 0.0 0.0 1.0 3.0 0% - - - n - 54 1 100% 100% 100% Mynach - 5.3 2.5 29.4 0.0 11.8 4.4 70. 8.2 39. 5.2 32.8 4.5 56.7 2.4 31. 4.1 73% -46% 81% -40% 40 3 6 3 Average 22.2 7.8 84.2 1.3 50.8 10. 32. 9.9 34. 5.4 25.3 6.2 38.7 2.9 44. 6.9 53% -53% -14% -58% 2 7 1 8 River Dee

Juvenile trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2011- average 2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Abbey 24.7 8.7 41.7 15.4 38.9 19.8 41.8 3.7 24.5 3.3 57.9 2.2 36.8 11.9 136% -32% 57% -81% Brook - 34 Ceidiog - 16.9 4.6 27.5 18.3 55.7 9.6 31.3 11.2 13.8 13.1 32.8 11.5 32.9 10.9 138% -12% 0% 5% 17 Ceiriog - 13.5 3.8 25.1 9.3 30.5 9.2 54.3 6.3 25.6 4.2 65.5 10.4 30.9 7.1 156% 148% 112% 46% 57

Ceirw - 0.0 1.0 1.6 5.5 2.7 3.0 5.1 6.9 1.9 2.8 2.4 4.1 283 Clywedog 19.6 3.9 10.4 3.3 3.3 2.9 28.4 3.4 2.5 2.9 23.4 1.7 15.4 3.4 851% -41% 52% -50% - 284 Hirnant - 2.0 0.3 2.5 0.7 15.3 1.7 5.3 3.1 28.4 3.4 6.6 0.9 434% 9% 329% 279% 35 Little Dee - 31.5 3.0 9.8 6.1 42.7 2.7 44.3 14.8 12.1 7.5 9.5 5.9 15.1 3.5 28.1 6.8 58% -42% -46% -49% 3 Meloch - 16.6 7.4 32.0 2.3 78.4 4.2 166.9 10.6 20.0 0.6 56.1 9.1 38.8 5.5 62.8 5.0 -31% -39% -38% 10% 33

Merddwr - 21.9 17.5 35.2 7.4 32.5 8.8 69.4 8.9 81.4 7.9 59.7 17.2 48.1 10.1 13 River Dee

Morwynion 54.1 14.1 139.2 17.6 118.9 18.1 69.6 4.7 82.1 9.4 185.8 2.1 95.5 13.6 126% -78% 95% -85% - 54 Mynach - 1.2 1.2 3.6 0.0 16.7 1.0 11.3 5.2 16.0 4.2 6.3 4.9 40.2 5.3 9.8 2.3 539% 8% 312% 129% 40 Average 18.4 6.0 20.2 4.0 38.0 7.9 54.2 10.2 34.1 5.3 26.1 6.9 54.2 5.1 33.0 6.7 108% -27% 64% -24% River Dwyfawr

River Dwyfawr

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2)

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Dwyfawr - 2.6 2.2 7.6 4.9 6.0 2.3 0.5 1.8 2.2 0.4 * * 4.2 2.8 * * * * 41

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Dwyfawr - 4.8 1.1 7.2 4.5 26.3 12.0 14.7 6.9 8.5 0.9 * * 13.3 6.1 * * * * 41

*unable to complete 2017 surveys due to flows River Dwyryd

River Dwyryd

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Teigl - 4.5 0.6 8.3 9.4 4.7 12.1 2.4 1.9 2.6 3.2 * * 5.0 6.0 * * * * 18

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Teigl - 9.6 1.3 9.4 4.2 22.3 2.0 10.6 3.4 4.5 8.3 * * 13.0 2.7 * * * * 18

*unable to complete 2017 surveys due to flows River Dyfi

River Dyfi

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year Site (2011-2015) 2016 average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Crewi - 5 5.4 1.3 1.9 3.2 0.0 1.5 0.0 0.5 2.4 2.0 Dulas N - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 115 Dyfi - 12 35.0 7.9 8.9 9.9 7.7 5.5 1.1 5.4 17.2 7.8 Iain - 7 0.0 0.9 4.9 0.0 0.0 0.7 0.0 0.0 0.9 0.0 1.6 0.5 + 0% -43% -100% Average 10.1 2.5 3.9 3.3 1.9 1.9 0.3 1.5 0.9 0.0 5.3 2.6 246% -100% -83% -100%

Dulas N - 21.8 14.3 11.0 10.0 23.9 12.6 20.6 6.5 18.9 12.3 115

Dyfi - 12 25.6 13.8 42.2 8.4 27.3 10.3 43.9 5.7 31.7 10.8 Iain - 7 50.9 8.2 98.0 7.1 51.1 7.2 32.3 6.3 55.2 5.2 66.7 7.5 71% -17% -17% -30% Average 35.3 10.9 50.6 7.8 47.8 11.8 41.4 8.3 55.2 5.2 44.6 10.2 33% -37% 24% -48% River Dysynni

River Dysynni

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Dysynni - 35.5 4.8 1.9 9.4 1.3 3.9 * * * * 12.9 6.0 * * * * 33

*unable to complete 2017 surveys due to flows

River Glaslyn

*unable to complete 2017 surveys due to flow

River Gwendraeth

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Gwendraeth Fawr 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0% 0% -100% 0% - GR04 Gwendraeth Fach 2.3 1.1 2.4 0.8 14.7 0.0 1.2 0.0 1.3 0.0 0.0 0.0 0.0 0.0 4.4 0.4 0% 0% -100% -100% - GH02 Average 1.1 0.6 1.2 0.4 7.3 0.0 0.6 0.0 1.1 0.0 0.0 0.0 0.0 0.0 2.3 0.2 0% 0% -100% -100%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Gwendraeth 114.4 6.2 12.7 21.8 38.8 16.5 68.3 7.5 37.5 4.8 9.6 11.1 47.5 2.3 54.4 11.4 396% -80% -13% -80% Fawr - GR04 Gwendraeth 18.4 12.1 1.6 2.8 0.0 1.3 3.7 2.5 5.1 2.5 0.0 1.2 1.7 7.3 5.8 4.2 + 525% -70% 73% Fach - GH02 Average 66.4 9.1 7.2 12.3 19.4 8.9 36.0 5.0 21.3 3.7 4.8 6.1 24.6 4.8 30.1 7.8 414% -22% -18% -38% River Loughor

River Loughor

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 Site (2011-2015) 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Morlais - 48.9 66.1 16.5 42.4 10.8 48.3 38.6 41.4 9.0 38.1 7.8 41.5 25.3 18.2 24.8 47.3 224% -56% 2% -62% LO12 River Mawddach

Sea Trout net catch, River Mawddach 1975- 2017 100

1979 1983 1987 1991 1995 1999 2003 2007 2011 2015 1975 Seine River Mawddach

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2)

River – 2011 2012 2013 2014 2015 2016 2017 5 Yr Average (2011- % Change from % Change from 5 year 2015) 2016 average Site Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0 >0 0+ >0 0+ >0 0+ >0 0+ >0 0+ >0 0 >0 0+ >0+ 0+ >0+ 0+ >0+ + + + + + + + + +

Eden - 49. 19. 81. 20. 29. 12. 14. 9.2 * * 53.2 17.5 * * * * 108 0 7 7 6 0 1 4 Wnion - 80. 7.6 21. 14. 43. 14. 9.2 14. 5.0 6.1 * * 38.8 12.6 * * * * 33 4 8 6 6 2 2 Average 80. 7.6 35. 17. 62. 17. 19. 13. 9.7 7.6 * * 49.4 13.8 * * * * 4 4 1 7 4 1 2

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year Site (2011-2015) 2016 average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Eden - 108 6.0 0.3 14.9 5.7 2.4 0.6 5.9 6.9 * * 7.7 2.2 * * * * Wnion - 33 4.4 5.1 25.0 4.9 11.1 6.1 18.1 3.1 9.7 6.1 * * 14.7 4.8 * * * * Average 4.4 5.1 15.5 2.6 13.0 5.9 10.2 1.9 7.8 6.5 * * 10.8 3.9 * * * *

*unable to complete 2017 surveys due to flow

River Neath

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year (2011-2015) 2016 average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Nant Clwyd - 0.7 0.0 0.7 0.0 0.6 0.0 0.0 2.6 0.0 0.0 0.0 0.0 0.5 0.6 0% 0% -100% -100% NE19 Sychryd - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0% 0% 0% 0% NE07i Average 0.3 0.0 0.3 0.0 0.3 0.0 0.0 1.3 0.0 0.0 0.0 0.0 0.2 0.3 0% 0% -100% -100%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Nant Clwyd 13.3 14.6 52.4 13.8 22.6 16.8 43.5 14.1 32.5 13.6 49.5 7.3 32.9 14.8 52% -46% 50% -51% - NE19 Sychryd - 13.4 11.0 12.7 14.4 14.1 7.3 0.4 5.9 18.1 1.3 21.8 6.9 10.2 9.6 21% 445% 114% -28% NE07i Average 13.3 12.8 32.6 14.1 18.4 12.0 22.0 10.0 25.3 7.4 35.6 7.1 21.6 12.2 41% -4% 65% -42%

River Nevern

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2)

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Bryn Berian 4.6 5.7 0.0 9.6 0.9 0.0 0.6 0.0 2.1 1.0 0.4 0.0 1.5 3.8 -83% -100% -76% -100% - NV11 Nevern - 31.5 15.4 25.3 14.6 35.2 23.4 22.1 8.7 0.0 17.5 0.0 0.0 28.5 15.5 0% -100% -100% -100% NV03 Average 18.1 10.5 12.7 12.1 18.1 11.7 11.3 4.4 1.0 9.3 0.2 0.0 15.0 9.7 -83% -100% -99% -100%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Bryn Berian 7.1 11.7 50.9 11.5 15.9 16.6 16.1 13.6 15.2 26.3 38.2 19.1 22.5 13.3 151% -27% 70% 43% - NV11 Nevern - 22.6 6.1 23.4 9.1 9.6 7.2 23.7 8.0 11.6 15.2 38.0 13.5 19.8 7.6 228% -11% 92% 78% NV03 Average 14.8 8.9 37.2 10.3 12.8 11.9 19.9 10.8 13.4 20.7 38.1 16.3 21.2 10.5 184% -21% 80% 56%

River Ogmore

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Ogwr Fach - 4.9 2.3 9.1 5.1 7.7 1.5 0.7 2.1 0.3 1.5 0.0 0.0 5.6 2.7 -100% -100% -100% -100% Og29 Ogwr Fawr - 4.6 7.5 11.6 4.9 11.5 2.6 0.3 4.5 3.1 0.8 1.8 0.5 7.0 4.9 -43% -35% -75% -90% OG16A Average 4.8 4.9 10.3 5.0 9.6 2.1 0.5 3.3 1.7 1.1 0.9 0.3 6.3 3.8 -48% -78% -86% -93%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Ogwr Fach - 15.5 4.9 8.2 11.6 8.6 7.1 9.4 6.6 2.7 4.8 3.5 6.9 10.4 7.6 27% 43% -67% -8% Og29 Ogwr Fawr - 1.2 1.7 6.1 1.5 16.3 9.6 1.1 3.1 1.0 2.9 2.0 1.0 6.2 4.0 94% -65% -67% -75% OG16A Average 8.3 3.3 7.2 6.6 12.5 8.4 5.3 4.9 1.9 3.9 2.7 4.0 8.3 5.8 46% 3% -67% -31% River Ogwen

Salmon net catch, River Ogwen 1975-2017 350 300

250 200

150

100

50 0

1979 1983 1987 1991 1995 1999 2003 2007 2011 2015 1975 Seine

River Ogwen

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Ogwen - 43.9 0.9 39.7 0.9 47.6 3.6 22.0 1.1 21.8 0.9 * * 38.3 1.6 * * * * 4

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Ogwen - 1.7 0.0 8.0 0.2 16.2 0.2 10.4 0.9 6.3 0.2 * * 9.1 0.3 * * * * 4

*unable to complete 2017 surveys due to flow

River Rheidol

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout Melindwr - 37.5 7.4 207.9 4.3 159.1 6.2 76.4 14.9 50.3 6.5 134.8 6.0 -34% -56% -63% 10% RH01A

River Rhymney

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2012-2016) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Rhymney - 0.6 1.0 1.3 1.0 1.9 0.3 0.6 1.0 48% -68% 221% -68% R001b Rhymney 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0% 0% 0% 0% Bargoed - R005 Average 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.5 0.7 0.5 1.0 0.2 0.1 0.1 48% -68% 1503% 60%

River - 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change Site Average from 2016 from 5 year (2011-2015) average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout Rhymney - 3.5 5.4 2.9 10.6 9.9 7.1 3.5 5.4 243% -33% 184% 31% R001b Rhymney 24.4 26.8 23.8 22.0 1.9 28.4 3.8 16.7 35.7 16.7 22.7 38.2 17.3 15.5 17.9 22.1 -24% -59% -4% -30% Bargoed - R005 Average 24.4 26.8 23.8 22.0 1.9 28.4 3.8 16.7 19.6 11.1 12.8 24.4 13.6 11.3 14.7 21.0 6% -54% -8% -46%

River Seiont

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Nant 35.8 9.1 15.3 6.9 12.9 11.8 33.3 6.7 26.9 8.4 * * 24.3 8.6 * * * * Peris - 3

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 Site (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Nant 1.2 0.0 2.1 1.4 18.8 2.7 32.5 0.0 12.0 0.7 * * 13.7 1.0 * * * * Peris - 3

*unable to complete 2017 surveys due to flow

River Severn

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2012-2016) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Banwy - Y Fron 1.4 0.6 19.6 0.0 8.9 2.6 14.3 1.0 2.2 1.2 39.3 0.6 11.1 1.1 1686% -51% 256% -44% Bechan Brook - 9.1 0.8 6.4 1.6 1.3 0.3 3.9 0.0 13.3 0.0 5.6 0.9 241% 0% 136% -100% Aberbechan Cain - Green Hall 17.6 0.0 19.6 2.9 20.5 1.3 1.7 0.6 18.5 0.3 19.2 1.4 987% -49% -4% -78% Camlad - Forden 0.4 0.4 4.5 1.5 0.8 2.0 6.4 0.8 8.9 0.7 1.9 1.3 39% -13% 370% -46% Hospital Carno - Wig Bridge 40.6 1.1 55.3 0.3 10.3 0.5 5.7 0.6 24.6 0.4 35.4 0.6 332% -33% -30% -37% Clywedog - U/S 0.0 3.6 0.4 0.2 0.0 3.6 Dieldre Conf Dulas - Rank Cottage 17.6 4.9 17.8 4.3 17.8 9.4 21.0 3.2 17.7 4.6 18% -66% 19% -31% Gam - Cefnllys Uchaf 10.3 5.3 21.7 2.9 15.3 4.0 1.8 1.2 78.4 1.1 15.7 4.0 4254% -11% 398% -73% Mule - Abermule 13.1 3.3 17.9 2.8 9.6 2.5 22.4 1.6 15.5 3.0 133% -36% 44% -47% Rhiew - New Mills 10.0 1.5 14.6 3.4 27.1 2.7 29.7 3.4 2.0 4.2 7.1 1.1 20.4 2.7 255% -74% -65% -60% Rhiew - RVLR 1.9 1.9 16.6 0.8 44.0 2.0 20.9 7.6 8.9 4.9 8.3 0.7 20.8 3.0 -7% -86% -60% -77% Severn - Old Hall 15.9 7.7 24.9 4.4 3.7 4.8 22.9 2.4 16.4 0.8 14.8 5.7 -28% -67% 11% -86% Tanat - Peddair 13.2 0.8 25.7 0.5 16.7 0.3 19.6 0.2 4.7 1.1 28.3 0.5 18.8 0.5 503% -55% 51% 7% Ffordd Tanat - U/S 6.6 1.4 8.3 2.1 2.4 0.3 3.9 0.0 6.1 3.9 5.8 1.3 56% + 5% 213% Llangynog STW Twrch - Dol y Gaseg 33.3 1.1 26.1 7.8 8.0 5.8 41.8 3.4 29.7 4.4 423% -41% 41% -23% Vyrnwy - Plas 10.1 6.7 43.6 3.9 4.6 1.8 79.3 2.1 26.8 5.3 1623% 18% 195% -60% Dolanog Falls Average 2.8 0.8 15.2 1.4 17.7 2.5 21.3 2.7 15.1 3.0 6.5 2.3 27.6 1.4 14.4 2.1 322% -41% 91% -34%

River Severn

Carno - Wig Bridge 0.8 0.0 0.0 0.0 0.0 0.0 0.0 1.3 0.0 0.4 0.3 0.0 0% -69% -100% + Clywedog - U/S 0.7 1.5 0.8 0.2 0.7 1.5 Dieldre Conf Dulas - Rank Cottage 6.1 9.0 13.2 3.7 0.0 4.7 5.9 1.4 9.7 6.4 + -70% -39% -78% Gam - Cefnllys Uchaf 0.8 3.0 1.4 2.6 0.5 2.5 0.0 1.4 0.0 0.4 0.9 2.7 0% -69% -100% -84% Mule - Abermule 0.8 0.8 0.0 2.8 1.0 5.6 1.0 2.1 0.4 1.8 0% -63% 144% 17% Rhiew - New Mills 0.2 0.7 1.1 0.0 5.8 1.8 0.5 0.5 0.7 4.6 2.9 1.3 1.9 0.8 314% -72% 51% 71% Rhiew - RVLR 0.3 1.9 0.0 0.4 5.3 5.3 0.0 9.3 0.4 6.1 0.0 2.5 1.4 4.2 -100% -59% -100% -41% Severn - Old Hall 10.5 0.2 6.7 1.3 4.2 1.1 1.6 0.3 1.3 0.0 7.1 0.9 -19% -100% -82% -100% Tanat - Peddair 0.0 0.3 0.3 0.0 1.7 0.7 1.1 0.0 0.2 0.0 0.0 0.2 0.8 0.2 -100% + -100% 1% Ffordd Tanat - U/S 0.3 11.8 14.6 8.3 5.2 5.2 3.9 6.1 4.3 6.4 6.7 8.4 10% 5% -36% -24% Llangynog STW Twrch - Dol y Gaseg 2.8 2.2 4.0 6.2 3.3 2.2 6.4 1.2 3.4 4.2 93% -44% 87% -71% Vyrnwy - Plas 1.0 0.2 1.0 0.7 0.0 0.2 3.4 0.2 1.0 0.4 + 6% 234% -52% Dolanog Falls Average 0.4 4.3 1.4 1.1 1.9 1.0 3.7 3.1 2.3 3.0 0.9 2.6 2.5 1.4 1.9 2.5 178% -44% 30% -42%

River Taf

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year (2011-2015) 2016 average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Cynin - 4.6 3.0 1.5 0.6 0.8 1.9 0.0 0.7 0.0 0.0 0.2 0.0 1.7 1.5 + 0% -87% -100% TA10 Cywyn - 4.7 6.0 2.0 0.0 0.6 2.3 5.6 0.5 0.0 5.2 1.7 0.0 3.3 2.2 + -100% -46% -100% TA02 Taf - TA38 2.8 1.6 0.9 2.2 1.7 2.1 2.2 0.4 2.4 1.2 0.0 0.0 1.9 1.6 -100% -100% -100% -100% Tigen - 0.5 3.6 0.8 1.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 1.3 0% 0% -100% -100% TA34a Average 3.1 3.5 1.3 1.1 0.8 1.6 2.0 0.4 0.6 1.6 0.5 0.0 1.8 1.7 -19% -100% -73% -100%

River - 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 Site (2011-2015) 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Cynin - 4.6 10.5 7.7 4.7 4.2 15.5 5.9 14.5 0.8 4.8 5.7 1.8 5.6 11.3 616% -62% 2% -84% TA10 Cywyn - 7.3 11.1 4.1 0.5 2.3 17.7 10.3 11.8 0.4 13.5 5.5 5.2 6.0 10.3 1164% -61% -7% -49% TA02 Taf - TA38 4.5 7.3 28.8 11.2 20.0 22.6 19.1 14.7 11.4 18.3 9.8 9.8 18.1 13.9 -14% -47% -46% -30% Tigen - 27.2 5.4 13.4 0.0 22.9 2.0 17.9 4.6 14.0 0.5 17.6 1.4 20.4 3.0 26% 200% -14% -55% TA34a Average 10.9 8.6 13.5 4.1 12.3 14.4 13.3 11.4 6.7 9.3 9.6 4.5 12.5 9.6 45% -51% -23% -53%

River Taff

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year (2011-2015) 2016 average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Taf Fechan - 0.5 5.3 0.3 1.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.7 0% 0% -100% -100% T002 Taff Fawr - 0.0 0.0 0.0 0.0 0.2 0.0 0.3 0.6 0.0 0.3 0.1 0.2 -100% 103% T004 Average 0.3 2.7 0.1 0.8 0.1 0.0 0.2 0.3 0.0 0.0 0.0 0.2 0.2 0.9 0% + -100% -84%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 year (2011-2015) 2016 average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Taf Fechan - 0.8 6.9 4.3 2.4 4.9 2.2 6.3 4.7 3.9 2.0 4.4 4.1 4.1 4.0 13% 110% 9% 2% T002 Taff Fawr - 2.0 2.5 0.2 5.4 0.9 1.4 5.8 5.5 0.9 8.3 2.2 3.7 0% 0% -59% 125% T004 Average 1.4 4.7 2.3 3.9 2.9 1.8 6.0 5.1 3.9 2.0 2.7 6.2 3.2 3.9 -32% 216% -15% 61%

River Tawe

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Cwm du - 12.1 5.0 15.8 3.5 12.6 0.9 8.0 5.6 4.4 2.0 34.4 4.0 8.9 6.3 10.6 3.4 -74% 57% -16% 86% TW03 Tawe - 2.7 2.2 1.2 3.9 2.6 3.5 9.7 1.8 18.0 3.1 0.8 3.1 2.8 0.8 6.8 2.9 236% -75% -59% -73% TW05 Average 7.4 3.6 8.5 3.7 7.6 2.2 8.9 3.7 11.2 2.5 17.6 3.6 5.9 3.5 8.7 3.1 -67% -1% -33% 13%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change from % Change from 5 (2011-2015) 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Cwm du - 23.0 2.5 5.9 0.5 38.8 0.0 17.2 1.6 33.2 0.0 13.2 0.0 24.8 0.4 23.6 0.9 88% + 5% -60% TW03 Tawe - 1.5 1.0 3.1 2.0 12.5 6.4 5.4 2.2 13.2 2.8 4.0 2.0 9.5 1.4 7.2 2.9 138% -31% 32% -51% TW05 Average 12.2 1.7 4.5 1.2 25.6 3.2 11.3 1.9 23.2 1.4 8.6 1.0 17.1 0.9 15.4 1.9 99% -13% 11% -53%

River Teifi

Juvenile trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change % Change from Average (2011- from 2016 5 year average 2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Brefi - TE28 24.0 6.0 20.0 9.5 26.7 10.3 17.8 7.4 32.2 4.0 23.6 8.6 80% -46% 36% -53% Duar - TE19 32.6 21.3 19.8 3.3 23.0 13.4 10.6 22.1 56.7 14.4 8.0 23.1 37.2 9.0 28.5 14.9 367% -61% 30% -40% Nant 36.1 27.5 30.1 30.1 54.9 45.7 75.9 31.0 12.1 24.7 58.3 15.6 49.3 33.6 382% -37% 18% -54% Bargoed - Te12 Ceri - TE08 5.2 4.9 4.8 5.5 4.3 5.5 22.6 8.7 2.7 20.5 15.8 2.6 9.2 6.1 483% -87% 72% -57% Clywedog - 15.7 7.8 6.8 6.2 5.1 4.7 5.5 4.9 2.9 5.3 7.5 1.1 8.3 5.9 163% -80% -9% -82% TE25A Cych - TE05 58.5 11.6 66.8 21.6 45.6 36.7 102.1 6.1 74.6 16.9 49.6 5.2 68.3 19.0 -34% -69% -27% -73% Average 28.7 13.2 19.8 3.3 26.3 15.4 23.4 20.7 48.2 12.6 19.7 16.3 33.4 6.2 29.3 13.0 70% -62% 14% -52%

River Tywi

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Alltwalis - 0.5 2.9 0.0 0.0 3.3 0.5 0.7 0.7 0.4 0.4 0.0 0.5 1.1 1.0 -100% 31% -100% -50% TY03 Gwili - TY05A 5.4 1.8 4.4 0.0 1.1 3.4 2.6 0.4 0.0 2.4 0.0 0.0 3.4 1.4 0% -100% -100% -100% Gorlech - 76.4 2.7 30.2 3.6 18.6 6.4 14.9 2.5 0.0 1.7 23.7 1.7 35.0 3.8 + -4% -32% -56% TY14 Melindwr - 23.3 2.9 2.8 1.2 1.0 1.5 5.8 0.0 1.4 5.9 5.2 0.6 8.2 1.4 283% -90% -37% -59% TY17 Dulas - TY22 4.7 0.0 0.0 0.0 0.0 2.4 4.7 0.6 0.0 0.0 0.0 0.0 2.3 0.7 0% 0% -100% -100% Cennen - 38.7 1.7 0.9 0.9 1.0 1.0 0.0 1.3 0.0 0.0 0.0 0.0 10.2 1.2 0% 0% -100% -100% TY25 Gwydderig - 21.4 5.9 2.8 1.0 7.0 1.9 1.7 1.7 0.0 4.1 18.6 3.4 8.2 2.6 + -17% 126% 31% TY35B Gwenlais - 13.6 8.9 15.5 1.3 10.5 7.7 7.1 3.8 5.3 3.0 17.9 0.8 11.7 5.4 237% -73% 53% -85% TY37 Gwenffrwd - 12.6 1.7 46.5 2.6 9.3 1.9 0.7 0.7 0.9 0.0 5.4 0.7 17.3 1.7 528% + -69% -61% TY38 Nant Pibwr - 0.0 0.0 0.0 0.4 0.0 0.0 0.0 0.8 0.0 0.0 0.0 0.0 0.0 0.3 0% 0% 0% -100% TYM33i Doethie - 8.3 6.8 10.4 7.4 8.7 4.9 9.2 7.4 10.0 3.3 9.8 0.0 11.1 1.4 9.3 6.0 13% 3429% 19% -76% TYM53 Pysgotwr 1.3 2.1 3.8 2.3 1.7 0.3 18.6 4.6 2.1 3.8 1.4 0.0 3.8 1.4 5.5 2.6 166% + -31% -45% Fawr - TYWFD3 Average 17.2 3.1 7.1 4.8 9.5 1.4 6.6 3.2 4.2 1.6 1.6 1.5 7.1 0.9 8.9 2.8 348% -40% -20% -69%

River Tywi

Juvenile trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Alltwalis - 27.2 13.8 18.4 2.0 31.2 9.8 14.1 14.1 2.3 2.3 9.7 4.1 22.7 9.9 316% 75% -57% -59% TY03 Gwili - 33.3 24.8 11.4 10.4 17.5 16.3 19.1 11.5 0.5 15.2 18.7 12.3 20.3 15.7 3831% -19% -8% -22% TY05A Gorlech - 34.0 11.1 27.7 5.8 10.9 17.3 14.2 6.5 1.7 9.5 21.6 5.4 21.7 10.2 1143% -43% 0% -47% TY14 Melindwr - 22.5 6.5 11.8 4.9 38.5 16.5 5.0 5.8 4.5 6.3 21.3 5.2 19.4 8.4 372% -18% 10% -39% TY17 Dulas - TY22 34.9 9.8 22.8 2.6 30.0 11.2 40.6 3.5 0.0 0.5 40.3 0.5 32.1 6.8 + -9% 26% -93% Cennen - 119.9 15.5 64.4 6.5 76.5 10.0 51.9 7.3 7.3 7.3 17.6 1.3 78.2 9.8 141% -83% -77% -87% TY25 Gwydderig - 30.0 7.9 7.1 0.0 12.6 3.0 11.5 0.9 2.7 1.0 22.3 0.6 15.3 2.9 718% -39% 46% -79% TY35B Gwenlais - 43.6 3.9 29.7 1.3 17.5 1.4 13.8 3.3 14.9 4.0 12.7 2.0 26.2 2.5 -15% -50% -51% -20% TY37 Gwenffrwd - 12.3 0.7 14.3 1.5 1.4 0.9 1.7 0.7 2.9 1.1 3.0 0.3 7.4 0.9 6% -71% -59% -64% TY38 Nant Pibwr - 0.0 0.4 0.0 1.8 0.0 0.0 3.7 1.2 0.0 2.6 0.0 0.0 0.9 0.9 0% -100% -100% -100% TYM33i Doethie - 16.9 0.8 2.7 1.2 3.8 0.0 7.4 2.1 3.3 0.5 2.5 0.0 8.7 0.0 6.8 0.9 248% 0% 28% -100% TYM53 Pysgotwr 16.1 0.0 3.8 1.5 4.3 0.6 11.0 3.3 2.6 0.2 0.7 0.0 5.7 0.0 7.6 1.1 698% 0% -25% -100% Fawr - TYWFD3 Average 32.5 7.9 3.3 1.4 18.0 3.1 21.2 7.7 15.1 4.6 3.3 4.2 15.1 2.6 18.0 4.9 353% -37% -16% -47%

River Usk

Juvenile salmon densities 2011 to 2017 (fish per 100m2)

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Usk - U001 6.8 4.3 38.0 3.5 0.8 11.7 9.6 5.3 0.0 4.5 72.5 0.9 13.8 6.2 + -80% 425% -85% Hydfer - 0.3 7.5 10.5 5.6 21.3 10.2 42.8 7.5 0.0 6.5 66.3 0.0 18.7 7.7 + -100% 254% -100% U002 Crai - U003 90.6 11.3 162.0 13.4 41.8 11.0 3.3 8.8 26.0 0.3 98.1 11.9 688% -97% -74% -97% Senni - U004 76.7 4.4 27.3 30.1 30.4 22.1 27.5 10.1 0.3 9.2 15.8 0.4 40.5 16.7 4547% -96% -61% -98% Cilieni - 39.9 16.1 49.4 15.5 162.0 24.0 74.7 25.8 0.9 16.2 9.4 0.4 81.5 20.4 968% -98% -88% -98% U005 Bran - U006 69.6 1.1 43.2 6.9 157.1 6.6 82.3 3.1 0.0 4.5 7.6 0.0 88.1 4.4 + -100% -91% -100% Ysgir - U007 36.3 12.2 61.8 24.7 63.3 48.4 3.5 35.5 0.4 9.9 6.1 1.3 41.2 30.2 1549% -87% -85% -96% Honddu - 10.3 6.3 28.7 0.5 12.7 0.3 14.4 1.4 0.0 0.6 0.4 0.0 16.5 2.1 + -100% -98% -100% U009 Menasgin - 0.0 5.0 2.1 0.0 0.0 8.8 0.0 1.6 0.0 0.8 0.3 0.0 0.5 3.9 + -100% -43% -100% U010 Rhiangoll - 3.9 5.0 53.3 0.0 2.3 0.0 0.0 0.4 0.0 0.0 19.8 1.7 0% -100% -100% -100% U011 Grwyne 23.6 25.3 6.5 10.7 9.9 6.0 0.6 9.4 0.0 3.6 0.0 0.0 10.2 12.9 0% -100% -100% -100% Fawr - U012 Grwyne 18.3 25.0 11.9 15.7 27.2 10.3 1.1 22.9 0.0 3.9 0.0 0.2 14.6 18.5 0% -95% -100% -99% Fechan - U013 Tarell - U022 38.0 12.1 57.9 4.5 44.7 11.3 37.1 6.0 7.9 2.1 0.0 0.3 44.4 8.5 -100% -86% -100% -96% Average 27.0 10.4 37.0 9.9 57.6 14.4 26.0 10.7 1.0 5.5 15.7 0.3 36.9 11.4 1493% -95% -57% -97%

River Usk

Juvenile trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from 5 Average 2016 year average (2011-2015) Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Usk - U001 9.3 6.1 4.5 8.0 32.9 13.3 38.7 13.5 5.8 9.6 2.0 0.4 21.4 10.2 -66% -96% -91% -96% Hydfer - 5.0 8.8 10.5 8.8 20.5 7.8 16.4 5.8 6.5 3.0 0.7 1.1 13.1 7.8 -89% -63% -95% -86% U002 Crai - U003 0.0 0.9 0.0 0.5 0.0 0.5 0.3 1.0 4.2 0.7 0.0 0.6 1300% -30% + 11% Senni - U004 9.4 4.4 0.0 2.8 0.8 4.3 2.9 7.2 2.7 4.1 34.8 2.0 3.3 4.7 1179% -51% 963% -57% Cilieni - U005 50.0 31.5 32.7 11.9 32.0 17.5 45.3 20.5 19.7 15.8 32.8 2.3 40.0 20.4 66% -85% -18% -89% Bran - U006 33.0 4.8 1.9 0.3 6.6 2.9 9.4 7.3 2.8 0.3 16.6 3.2 12.7 3.8 497% 841% 30% -16% Ysgir - U007 36.3 6.7 1.1 3.3 3.9 5.1 12.1 4.3 0.4 4.4 47.8 6.1 13.4 4.9 12819% 38% 258% 26% Honddu - 22.9 4.0 32.5 0.0 37.4 5.5 75.8 11.3 14.1 2.6 5.8 5.5 42.2 5.2 -59% 116% -86% 6% U009 Menasgin - 117.5 10.0 14.4 9.3 2.0 26.5 17.3 30.6 9.4 13.2 31.9 3.8 37.8 19.1 238% -71% -16% -80% U010 Rhiangoll - 27.8 3.3 3.1 1.8 0.6 0.0 1.5 0.8 32.9 0.0 10.5 1.7 2036% -100% 213% -100% U011 Grwyne Fawr 8.4 5.7 6.5 3.9 12.5 7.5 15.4 12.8 9.5 10.9 12.3 0.0 10.7 7.5 30% -100% 15% -100% - U012 36.7 13.3 10.3 6.9 24.1 3.4 13.4 8.6 6.3 10.6 3.1 6.7 21.1 8.1 -50% -36% -85% -16% Grwyne Fechan - U013

Tarell - U022 13.3 2.0 0.2 1.5 0.0 3.6 0.2 2.4 0.4 2.1 16.3 5.0 3.4 2.4 3781% 139% 376% 111% Average 30.8 8.4 9.1 4.6 14.4 8.2 19.0 9.6 6.1 6.0 18.6 2.8 18.3 7.7 204% -53% 1% -63%

River Wye

Juvenile salmon densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year % Change from % Change from Average 2016 5 year average (2011-2015) Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Dernol - 43.8 29.9 102.2 14.2 34.7 16.0 53.8 13.1 70.0 3.8 75.5 11.7 58.6 18.3 8% 204% 29% -36% W001 Marteg - 21.4 3.6 50.1 4.0 80.3 6.0 45.0 3.8 20.9 3.8 48.0 2.3 49.2 4.3 130% -40% -2% -48% w002 Llanwrthyl 27.7 2.5 27.7 1.9 16.3 5.2 25.4 1.5 10.8 0.0 6.3 0.0 24.3 2.8 -42% 0% -74% -100% Dulas - W003 Ithon - 12.4 0.3 10.1 0.5 13.4 0.3 7.1 0.0 4.5 0.3 21.3 0.0 10.8 0.3 374% -100% 98% -100% W004 Clywedog - 8.4 0.8 26.8 1.4 21.0 0.5 14.9 0.9 27.3 0.0 18.7 0.9 83% -100% 45% -100% W005 South 41.3 1.1 20.4 0.7 110.4 2.0 41.4 1.1 13.5 0.8 13.2 1.8 31.4 0.2 45.4 1.1 138% -89% -31% -82% Dulas - Irfon - W007 Garth 62.6 8.2 65.6 3.6 46.6 7.2 49.0 4.3 89.0 2.5 30.5 2.5 18.1 1.0 62.6 5.1 -41% -59% -71% -80% Dulas - W008a Chwerfri - 233.3 5.2 138.1 5.9 217.4 0.3 201.9 6.3 75.4 2.4 45.2 0.0 67.1 0.5 173.2 4.0 48% + -61% -88% W009 Duhonw - 19.3 1.1 13.9 0.0 6.3 0.3 31.1 4.0 17.8 1.2 21.7 0.0 17.7 1.3 22% -100% 23% -100% W010 Edw - 50.5 1.9 80.0 2.2 31.2 3.9 47.8 11.6 21.5 3.1 146.8 2.4 52.4 4.9 582% -23% 180% -52% W011 Sgithwen - 12.8 3.1 15.3 4.2 43.4 6.9 23.5 3.2 3.0 1.5 34.1 0.4 23.8 4.3 1027% -73% 44% -91% W012

River Wye

Lugg - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 0.0 0.0 0.0 + 0% 0% + W014 Hindwell 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0% 0% 0% 0% Brook - W016 Honddu - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0% 0% 0% 0% W020 Wye - 18.4 0.8 12.8 1.3 19.6 2.0 23.3 1.2 4.5 0.9 24.2 0.7 18.5 1.3 437% -19% 31% -46% W025 Bidno - 22.3 8.0 30.3 7.4 22.6 6.1 49.2 9.3 25.7 5.3 70.5 3.2 31.1 7.7 174% -40% 127% -59% W029 Ithon - 29.4 2.8 44.4 1.7 30.5 1.9 42.4 0.0 46.7 0.8 46.3 0.9 36.7 1.6 -1% 11% 26% -42% W032d Aran - 26.0 5.0 29.3 0.7 1.3 0.0 5.1 0.0 0.9 0.9 1.6 0.0 15.4 1.4 81% -100% -89% -100% W033 Nantmel 14.6 2.3 6.6 2.0 3.1 0.5 11.2 0.0 10.6 2.2 261% -100% 6% -100% Dulas - W035a Cammarch 101.5 3.6 102.8 5.0 92.4 3.7 76.3 2.7 77.8 1.6 50.2 4.8 89.8 6.8 90.2 3.3 79% 43% 0% 106% - W043a Einon - 0.0 0.0 3.6 0.5 19.2 0.8 2.4 0.0 0.0 1.0 0.0 0.0 0.0 0.0 5.0 0.5 0% 0% -100% -100% W044b Llynfi - 1.2 0.0 0.4 0.0 0.0 0.0 3.1 0.0 0.0 0.0 0.0 0.0 1.2 0.0 0% 0% -100% 0% W047e Arrow - 0.0 0.0 0.0 0.0 0.0 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0% 0% 0% -100% W052 Irfon - 20.0 0.5 16.7 0.0 29.5 1.4 37.3 0.0 15.9 0.5 8.0 1.0 25.9 0.5 -49% 115% -69% 111% W095L Average 65.5 2.6 27.9 3.3 43.6 2.5 31.4 2.9 27.8 2.5 16.6 1.4 31.3 1.3 39.2 2.8 88% -4% -20% -53%

River Wye

Marteg - 1.7 0.6 3.1 0.3 0.7 0.7 2.5 0.8 1.3 1.0 5.3 1.0 2.0 0.6 319% 0% 165% 78% w002 Llanwrthyl 15.1 6.9 17.6 12.6 69.6 23.0 59.2 12.3 33.8 7.7 47.8 7.1 40.4 13.7 41% -8% 18% -48% Dulas - W003 Ithon - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 + 0% + 0% W004 Clywedog - 0.0 0.5 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.3 0% 0% 0% -100% W005 South 1.1 0.0 0.4 0.2 2.9 0.0 0.5 0.0 1.5 0.0 0.5 0.0 1.2 0.2 1.3 0.0 164% + -5% 356% Dulas - Irfon - W007 Garth 6.2 0.0 1.0 0.0 2.0 0.4 0.7 3.0 1.7 5.0 0.4 4.2 2.0 0.7 2.3 1.7 474% -84% -12% -60% Dulas - W008a

River Wye

Chwerfri - 7.8 4.8 1.5 2.6 1.6 2.2 0.7 4.4 1.9 2.7 1.0 0.8 0.2 0.5 2.7 3.3 -77% -38% -91% -86% W009 Duhonw - 0.4 1.1 0.3 1.4 1.0 4.3 2.6 7.6 1.2 5.6 0.9 0.5 1.1 3.6 -22% -92% -15% -87% W010 Edw - 0.0 2.9 1.1 3.9 0.2 1.6 3.6 6.6 1.5 2.8 2.1 3.0 1.2 3.7 34% 7% 68% -21% W011 Sgithwen - 3.1 3.6 0.5 0.5 0.0 0.6 3.2 0.6 3.0 1.0 7.2 0.0 1.7 1.3 139% -100% 327% -100% W012 Lugg - 0.3 1.3 12.8 1.0 2.2 8.2 27.9 3.6 10.7 4.3 5.9 5.9 10.8 3.5 -45% 38% -45% 67% W014 Hindwell 2.8 1.2 7.1 11.4 28.6 7.8 21.7 15.7 8.1 8.9 12.8 6.8 -63% -43% -37% 31% Brook - W016 Honddu - 2.6 7.7 0.6 4.8 1.4 2.3 1.8 3.8 8.5 2.4 3.5 7.3 7.9 2.6 3.0 4.2 126% -64% 165% -37% W020 Wye - 0.3 0.0 0.0 0.0 0.8 0.3 1.2 0.0 1.0 0.0 1.9 0.0 0.6 0.1 85% 0% 238% -100% W025 Bidno - 9.7 0.0 6.9 2.9 2.4 0.4 6.2 1.3 1.3 0.0 8.6 1.4 6.3 1.1 549% + 37% 19% W029 Ithon - 2.8 1.7 0.6 0.0 0.0 0.0 1.4 0.0 0.8 0.8 2.8 0.0 1.2 0.4 233% -100% 135% -100% W032d Aran - 13.0 2.0 32.7 2.7 3.0 0.4 8.2 0.0 11.8 2.3 15.6 0.4 14.2 1.3 33% -82% 10% -68% W033 Nantmel 0.0 2.3 1.5 1.5 0.5 1.5 2.0 3.6 0.8 1.9 287% 132% 162% 88% Dulas - W035a

River Wye

Cammarch 1.5 0.0 1.1 0.6 5.5 0.0 3.2 1.1 6.9 0.5 3.0 1.2 5.1 0.0 3.6 0.4 71% -100% 40% -100% - W043a Einon - 16.4 1.0 12.8 1.5 55.2 13.4 83.9 8.3 23.9 5.7 62.1 3.2 47.4 2.1 38.5 6.0 -24% -33% 23% -65% W044b Llynfi - 0.0 2.3 0.0 1.2 0.0 2.5 0.7 6.6 2.4 4.9 0.0 6.6 0.2 3.1 -100% 37% -100% 111% W047e Arrow - 3.9 8.8 5.8 16.4 5.7 8.0 17.1 4.6 10.4 5.9 11.2 7.4 8.1 9.5 9% 25% 38% -22% W052 Irfon - 13.8 0.5 12.4 0.0 9.3 0.3 3.6 0.2 4.3 0.0 4.9 0.0 9.8 0.3 13% 0% -50% -100% W095L Average 7.0 2.0 4.6 2.4 8.3 3.2 8.8 4.0 10.5 3.4 8.1 3.1 9.3 2.2 7.9 3.0 15% -30% 18% -27%

River Ystwyth

Juvenile salmon and trout densities 2011 to 2017 (fish per 100m2) River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2011-2015) from 2016 year average Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon Salmon 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Creddyn - YS02 11.2 4.2 21.4 1.3 14.9 1.1 3.9 1.9 0.0 0.0 0.0 0.0 0.0 0.0 10.3 1.7 0% 0% -100% -100% Paith - YS01 0.0 0.0 0.0 0.7 0.0 3.1 0.0 7.8 0.0 0.8 0.0 0.0 2.0 9.2 0.0 2.5 0% 0% + 271% Average 5.6 2.1 10.7 1.0 7.4 2.1 1.9 4.9 0.0 0.4 0.0 0.0 1.0 4.6 5.1 2.1 + + -80% 120%

River - Site 2011 2012 2013 2014 2015 2016 2017 5 Year Average % Change % Change from 5 (2011-2015) from 2016 year average Trout Trout Trout Trout Trout Trout Trout Trout Trout Trout 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ 0+ >0+ Creddyn - YS02 58.7 10.5 56.0 6.3 36.4 7.7 78.7 6.5 90.7 12.3 24.8 11.4 24.1 1.3 64.1 8.6 -3% -89% -62% -85% Paith - YS01 94.6 52.3 71.1 31.5 25.8 27.7 176.5 39.2 105.0 45.0 34.3 74.1 48.2 29.7 94.6 39.2 41% -60% -49% -24% Average 76.7 31.4 63.6 18.9 31.1 17.7 127.6 22.8 97.8 28.6 29.5 42.8 36.1 15.5 79.4 23.9 22% -64% -54% -35%