
Silt Trap inlet
- Water
- 15°C
- Oxygen
- 4ppm
20°C reference
6 ppm reference

Latest readings

20°C reference
6 ppm reference

20°C reference
6 ppm reference
Water history
| Date | Location | Water temperature°C | Dissolved oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm |
|---|---|---|---|---|---|---|
| Lake Outlet | 21 °C | 8 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 16 °C | 4 ppm | 0.03 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 21 °C | 8 ppm | 0 ppm | 2 ppm | 0 ppm | |
| Silt Trap inlet | 13 °C | 3 ppm | 0.03 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 22 °C | 12 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 16 °C | 2 ppm | 0.03 ppm | 15 ppm | 0 ppm | |
| Lake Outlet | 22 °C | 8 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 16.5 °C | 4 ppm | 0.1 ppm | 10 ppm | 0 ppm | |
| Lake Outlet | 22 °C | 10 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 16 °C | 3 ppm | 0 ppm | 15 ppm | 0 ppm | |
| Lake Outlet | 21 °C | 8 ppm | 0 ppm | 5 ppm | 0.25 ppm | |
| Silt Trap inlet | 15 °C | 3 ppm | 0 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 20 °C | 8 ppm | 0 ppm | 2 ppm | 0 ppm | |
| Silt Trap inlet | 15 °C | 6 ppm | 0 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 21 °C | 8 ppm | 0 ppm | 10 ppm | 0 ppm | |
| Silt Trap inlet | 16 °C | 2 ppm | 0 ppm | 15 ppm | 0.25 ppm | |
| Lake Outlet | 20 °C | 10 ppm | 0 ppm | 0 ppm | 0 ppm | |
| Silt Trap inlet | 15 °C | 6 ppm | 0.03 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 20 °C | 8 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 17 °C | 4 ppm | 0 ppm | 15 ppm | 0.25 ppm | |
| Lake Outlet | 20 °C | 12 ppm | 0 ppm | 10 ppm | 0 ppm | |
| Silt Trap inlet | 17 °C | 6 ppm | 0 ppm | 15 ppm | 0.25 ppm | |
| Lake Outlet | 19 °C | 12 ppm | 0 ppm | 5 ppm | 0.25 ppm | |
| Silt Trap inlet | 15 °C | 4 ppm | 0 ppm | 10 ppm | 0.25 ppm | |
| Lake Outlet | 19 °C | 10 ppm | 0 ppm | 5 ppm | 0.25 ppm | |
| Silt Trap inlet | 16 °C | 4 ppm | 0 ppm | 15 ppm | 0.25 ppm | |
| Lake Outlet | 19 °C | 12 ppm | 0 ppm | 5 ppm | 0.2 ppm | |
| Silt Trap inlet | 14 °C | 4 ppm | 0 ppm | 10 ppm | 0.2 ppm | |
| Lake Outlet | 18 °C | 12 ppm | 0 ppm | 5 ppm | 0.2 ppm | |
| Silt Trap inlet | 15 °C | 8 ppm | 0 ppm | 15 ppm | 0.2 ppm | |
| Lake Outlet | 18 °C | 12 ppm | 0 ppm | 5 ppm | 0 ppm | |
| Silt Trap inlet | 15 °C | 4 ppm | 0 ppm | 10 ppm | 0 ppm | |
| Lake Outlet | 17 °C | 12 ppm | 0 ppm | 2 ppm | 0 ppm | |
| Silt Trap inlet | 14 °C | 6 ppm | 0 ppm | 15 ppm | 0 ppm | |
| Lake Outlet | 18 °C | 12 ppm | 0 ppm | 5 ppm | 0.2 ppm | |
| Silt Trap inlet | 15 °C | 4 ppm | 0 ppm | 15 ppm | 0 ppm |
The full record
Date · place · result
| Date | Location | Time | Water°C | Oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm | pH | Air°C | Rainfallmm | Weather | Observations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Outlet | 09:00 | 18.0 | 12.0 | 0.00 | 5.00 | 0.20 | 7.8 | 18.0 | 7.0 | overcast and dry | Prevailing S West breeze has pushed all blanket weed clear from the middle of the lake into the North bank margins. No dead fish. Autumn leaves are starting to fall into the lake. Steady but low outflow volume. | |
| Silt Trap inlet | 08:30 | 15.0 | 4.0 | 0.00 | 15.00 | 0.00 | 7.8 | 16.0 | 7.0 | cloudy, dry and gentle breeze | Silt trap has usual grey cloudy appearance. can't see the bottom. Water flow low but flowing. We are basically still in drought conditions. |
| Date | Location | Time | Water°C | Oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm | pH | Air°C | Rainfallmm | Weather | Observations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nethercote Brook | 09:00 | 14.0 | — | — | — | 0.00 | 8.4 | 15.0 | 0.0 | Overcast and dry | Slight cloudiness in stream, but gravel can be seen. Possibly more flow in this stream than in Sheep Brook. | |
| Sheep Brook | 09:00 | 14.0 | — | — | — | 0.00 | 7.8 | 15.0 | 0.0 | overcast and dry | Clear and low flow, with gravel showing. | |
| Lake Outlet | 08:45 | 17.0 | 12.0 | 0.00 | 2.00 | 0.00 | 7.8 | 14.0 | 0.0 | overcast, dry, light breeze | One or two large rafts of blanket weed and small accumulations in the margins. Still fishable. No dead fish. Out flow less than 25th September but still flowing. | |
| Silt Trap inlet | 08:00 | 14.0 | 6.0 | 0.00 | 15.00 | 0.00 | 7.8 | 12.0 | 0.0 | overcast, dry, light breeze | Inlet flow slightly reduced from 25th September sampling. Silt trap still slightly cloudy. | |
| Lake Outlet | 08:30 | 18.0 | 12.0 | 0.00 | 5.00 | 0.00 | 7.8 | 18.0 | 0.0 | Broken cloud and dry. Light breeze. | Water outflow slightly reduced. No dead fish. Two swans appear to be taking up residence. They've been around for the past two weeks. Blanket weed is in small rafts. Could be raked from the margins when blown by a strong breeze. Water remains clear to depths | |
| Silt Trap inlet | 08:00 | 15.0 | 4.0 | 0.00 | 10.00 | 0.00 | 7.8 | 16.0 | 0.0 | overcast and dry | Silt trap slightly cloudy. Flow appears slightly less than 22nd Sept pH 7.8 | |
| Lake Outlet | 09:30 | 18.0 | 12.0 | 0.00 | 5.00 | 0.20 | 7.8 | 18.0 | 0.0 | overcast and dry with light breeze | Blanket weed in all the margins and small rafts of it all over. No dead fish and one or two rises along heights. | |
| Silt Trap inlet | 08:30 | 15.0 | 8.0 | 0.00 | 15.00 | 0.20 | 7.8 | 18.0 | 0.0 | overcast and dry with almost no breeze | Part of the bank shoring by Steve Ward and Stuart Free has collapsed into the silt trap. Inlet flow appeared less than on Friday 18th September. Lake is still cloudy grey. | |
| Lake Outlet | 10:00 | 19.0 | 12.0 | 0.00 | 5.00 | 0.20 | — | 16.0 | 5.0 | cloudy, dry, strong south West breeze | Breeze forcing blanket weed toward margins. Clear for fishing in the main lake Much of the shallows at Franklins and Keens unfishable. The removal of the trailing willows along Franklins has enabled the penetration of the strong breeze and ripples on the water to enhance oxygenation. No dead fish. No significant autumn leaves on the surface. | |
| Silt Trap inlet | 08:00 | 14.0 | 4.0 | 0.00 | 10.00 | 0.20 | — | 15.0 | 5.0 | cloudy, dry, South West breeze | Silt trap inflow slight improvement. Silt trap clearing to over a meter depth | |
| Lake Outlet | 09:30 | 19.0 | 10.0 | 0.00 | 5.00 | 0.25 | — | 22.0 | 8.0 | cloudy but dry. | Patches of blanket weed blowing toward margins. Fish stocked on 11th September. Today 14th no dead fish observed. Register shows two anglers caught and released six each on 13th. Same day of this sampling Bruce fished for two hours and CAR six. The fish seemed vigorous and healthy. Water outflow volume is marginally better than on 11th September. Some damsels and dragonflies were flitting about. | |
| Silt Trap inlet | 09:00 | 16.0 | 4.0 | 0.00 | 15.00 | 0.25 | — | 22.0 | 8.0 | cloudy and dry | Silt trap slightly cloudy. Inflow has marginally increased. I observed two crayfish in the narrow silt trap in the stream. | |
| Lake Outlet | 09:00 | 19.0 | 12.0 | 0.00 | 5.00 | 0.25 | — | 20.0 | 19.0 | Broken cloud and dry | Small patches of Blanket weed all over. Outflow volume looking ok Water is clear to depth. Overhanging willows along Franklins cleared New stock of 100 rainbow trout up to 2lb | |
| Silt Trap inlet | 08:00 | 15.0 | 4.0 | 0.00 | 10.00 | 0.25 | — | 19.0 | 19.0 | overcast and dry | Silt trap cloudy One small trout 7cm observed in the mini silt trap before the sloices of the sluices. Also a crayfish in the same area. | |
| Lake Outlet | 09:00 | 20.0 | 12.0 | 0.00 | 10.00 | 0.00 | — | 21.0 | 0.0 | cloudy, dry and strong breeze | Small increase in blanket weed both sides of the main boom. Numerous small clumps of blanket weed all over the lake. Todays strong breeze blowing the floating debris toward the bank. Trailing willow foliage in the lake at Franklins is definitely starting to sprout root like growth. Very little insect life. Very occasional rising fish. No dead fish were observed. | |
| Silt Trap inlet | 08:30 | 17.0 | 6.0 | 0.00 | 15.00 | 0.25 | — | 21.0 | 0.0 | cloudy dry and strong breeze | Silt trap still cloudy. Inlet flow remains low with no noticeable change since previous sampling 4th September. No autumn leaves yet. | |
| Lake Outlet | 10:00 | 20.0 | 8.0 | 0.00 | 5.00 | 0.00 | — | 20.0 | 12.0 | overcast with showers and blustery breeze | Small patches of Blanket weed starting to appear on the surface. No dead fish. No insect life and no rising fish observed. Looks like the Franklins/Pole willows branches in the water are starting to sprout roots. | |
| Silt Trap inlet | 08:30 | 17.0 | 4.0 | 0.00 | 15.00 | 0.25 | — | 19.0 | 12.0 | Overcast with showers | Silt trap inlet flow slightly improved. Water is cloudy |
| Date | Location | Time | Water°C | Oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm | pH | Air°C | Rainfallmm | Weather | Observations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lake Outlet | 09:00 | 20.0 | 10.0 | 0.00 | 0.00 | 0.00 | — | 18.0 | 36.0 | overcast, dry, and breezy | No floating debris. Lake outflow slightly improved with the recent 36mm rainfall. Lake clear to depths No dead fish | |
| Silt Trap inlet | 08:00 | 15.0 | 6.0 | 0.03 | 10.00 | 0.25 | — | 17.0 | 35.0 | overcast, dry and breezy | Slight increase in the inflow volume. Silt trap grey cloudy, but might be clearer than previously 27th August | |
| Lake Outlet | 09:00 | 21.0 | 8.0 | 0.00 | 10.00 | 0.00 | — | 20.0 | 10.0 | Sunny and Breezy | Boom is in place at Keens and Franklins and no debris either side of it. Contractor weed cutting and removal on Monday 24th has removed all trace of surface blanket weed. Water clarity is excellent in the shallows at Keens and Franklins. Drought conditions remain after the 10mm rainfall. The banksides are still hard baked. Outflow volume appears slightly improved. No debris at the outflow after weedcutting and clearing. Water is clear at Dam and Elm. No dead fish. Still very little insect life around. | |
| Silt Trap inlet | 08:30 | 16.0 | 2.0 | 0.00 | 15.00 | 0.25 | — | 19.0 | 10.0 | Sunny and breezy | Inflow remains low but stable. Silt trap seems marginally clearer. | |
| Silt Trap inlet | 08:30 | 15.0 | 6.0 | 0.00 | 10.00 | 0.25 | — | 16.0 | 0.0 | Sunny and dry | Drought. Water still flowing into the silt trap. Silt trap still too cloudy to see the bottom, but perhaps clearer than on 21st August. | |
| Lake Outlet | 10:00 | 20.0 | 8.0 | 0.00 | 2.00 | 0.00 | — | 20.0 | 0.0 | Sunny , dry, strong northerly breeze. | Drought. Water still flowing over the outlet. No dead fish. A few small blue Damsels around noon. Lake weed cutting and clearing today. Actually not much weed and 90% blanket weed in the clearing up, deposited on the banks to allow drainage. Boom removed for cutting, then replaced after work completion. | |
| Lake Outlet | 09:00 | 21.0 | 8.0 | 0.00 | 5.00 | 0.25 | — | 19.0 | 7.5 | Sunny. Dry. Stong breeze from North | Blanket weed cover continues to grow. Water flow appears to have slightly increased since Monday 17th August. Drought conditions and ground full of dried cracks. No dead fish. | |
| Nethercote Brook | 10:00 | 18.0 | 2.0 | 0.00 | 15.00 | 0.25 | — | 19.0 | 7.5 | Broken cloud and dry | Good flow compared with that in Sheep Brook. Seems slightly cloudy. | |
| Sheep Brook | 10:00 | 15.0 | 2.0 | 0.03 | 8.00 | 0.00 | — | 17.5 | 7.5 | Broken cloud and dry | Low flow but clear water. Clean gravel on the bed of the brook | |
| Silt Trap inlet | 08:00 | 15.0 | 3.0 | 0.00 | 10.00 | 0.25 | — | 17.5 | 7.5 | Partial cloud and dry. Strong breeze | Silt trap still cloudy, but settling. Water flow looks slightly improved. | |
| Lake Outlet | 09:30 | 22.0 | 10.0 | 0.00 | 5.00 | 0.00 | — | 21.0 | 0.0 | Sunny | Drought. Small trickle continues over the lake outlet. Blanket weed in all margins and large raft of blanket weed against the main boom. Hardly any insect life observed. A few trout observed rising periodically near the shady margins. No stressed or dead fish were observed. | |
| Silt Trap inlet | 08:30 | 16.0 | 3.0 | 0.00 | 15.00 | 0.00 | — | 21.0 | 0.0 | Sunny | Drought. Water still flowing in both brooks and in bypass stream. Silt trap cloudy water. Bottom not visible. Sheep Brook running clear. Nethercote Brook has faint cloudiness. | |
| Lake Outlet | 09:00 | 22.0 | 8.0 | 0.00 | 5.00 | 0.00 | — | 24.0 | 0.0 | Sunny | Drought. Lake outlet still flowing but very low. Blanket weed cover is growing. No dead fish | |
| Silt Trap inlet | 08:59 | 16.5 | 4.0 | 0.10 | 10.00 | 0.00 | — | 24.0 | 0.0 | Sunny. | Silt trap cloudy. Drought. Silt trap inlet still flowing. Both brooks still flowing | |
| Lake Outlet | 09:00 | 22.0 | 12.0 | 0.00 | 5.00 | 0.00 | — | 20.0 | 0.0 | Sunny | No dead fish Drought. Centre of lake clear of weed in strong breeze A lot of blanket weed at boom and in margins. Gidigi meter dissolved Oxy 12.1ppm same as Salifert. | |
| Silt Trap inlet | 08:00 | 16.0 | 2.0 | 0.03 | 15.00 | 0.00 | — | 20.0 | 0.0 | Sunny | Drought Inlet still flowing Very cloudy water. | |
| Lake Outlet | 09:15 | 21.0 | 8.0 | 0.00 | 2.00 | 0.00 | — | 18.0 | 0.0 | Sunny | No dead fish. Drought. Blanket weed continues to develop. | |
| Silt Trap inlet | 08:30 | 13.0 | 3.0 | 0.03 | 10.00 | 0.25 | — | 18.0 | 0.0 | Sunny | No dead fish. Drought Blanket weed continues to develop | |
| Lake Outlet | 09:00 | 21.0 | 8.0 | 0.00 | 5.00 | 0.00 | — | 23.0 | 0.0 | Sunny | Drought | |
| Silt Trap inlet | 08:00 | 16.0 | 4.0 | 0.03 | 10.00 | 0.25 | — | 23.0 | 0.0 | Sunny | Drought. No dead fish Blanket weed continues slowly |
| Date | Location | Time | Water°C | Oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm | pH | Air°C | Rainfallmm | Weather | Observations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Silt Trap inlet | 09:00 | 15.0 | 1.0 | 0.00 | 15.00 | 0.25 | — | 20.0 | 0.0 | Heatwave Drought | Dead Fish None. Floating Debris Blanket in margins. Storm Damage None. Sewer Outflow None noted. Other: Lake very clear water. Silt trap cloudy. | |
| Lake Outlet | 09:00 | 19.0 | 8.0 | 0.00 | 5.00 | 0.00 | — | 20.0 | 0.0 | Heatwave Drought | Water Flow Low but stable. | |
| Silt Trap inlet | 08:00 | 15.0 | 2.0 | 0.03 | 5.00 | 0.00 | — | 20.0 | 0.0 | Heatwave drought | Dead Fish None. Floating Debris Blanket in margins. Storm Damage None. Sewer Outflow None noted. Other: none. Silt trap cloudy. | |
| Lake Outlet | 08:00 | 22.0 | 10.0 | 0.00 | 5.00 | 0.25 | — | 20.0 | 0.0 | Heatwave drought | Water Flow Low but stable. | |
| Lake Outlet | 09:30 | 22.0 | 6.0 | 0.00 | 5.00 | 0.00 | — | 20.0 | 0.0 | Sunny | Drought | |
| Silt Trap inlet | 08:45 | 15.0 | 2.0 | 0.00 | 20.00 | 0.25 | — | 20.0 | 0.0 | Sunny drought | No dead fish. Blanket weed increasing. Outflow slow but stable. Silt trap very cloudy. Lake clear water. | |
| Lake Outlet | 09:15 | 22.0 | 10.0 | 0.00 | 5.00 | 0.00 | — | 20.0 | 0.0 | Heatwave drought | No dead fish. Blanket weed in margins Lake clear water Water flow slow but stable | |
| Silt Trap inlet | 08:45 | 14.0 | 3.0 | 0.00 | 20.00 | 0.25 | — | 20.0 | 0.0 | Sunny | Silt trap cloudy | |
| Silt Trap inlet | 08:30 | 16.0 | 3.0 | 0.10 | 10.00 | 0.00 | — | 21.0 | 0.0 | Heatwave drought | Dead Fish None. Floating Debris Blanket in margins. Storm Damage None observed. Sewer Outflow None observed. Other: Nothing unusual. | |
| Lake Outlet | 08:30 | 23.0 | 7.0 | 0.10 | 8.00 | 0.00 | — | 21.0 | 0.0 | Heatwave drought | Water Flow Low but flowing. | |
| Silt Trap inlet | 09:00 | 16.0 | 2.0 | 0.03 | 2.00 | 0.00 | — | 24.0 | 0.0 | Heatwave drought | Dead Fish None. Floating Debris Feather/blanket. Storm Damage None observed. Sewer Outflow None observed. Other: Nothing unusual. | |
| Lake Outlet | 09:00 | 24.0 | 8.0 | 0.00 | 4.00 | 0.25 | — | 24.0 | 0.0 | Heatwave drought | Water Flow Low but flowing. | |
| Silt Trap inlet | — | 17.0 | 2.0 | 0.00 | 25.00 | 0.00 | — | — | 0.0 | Heatwave drought | Dead Fish None. Floating Debris Feather / blanket. Storm Damage None observed. Sewer Outflow None observed. Other: Inlet Nitrate spike. | |
| Lake Outlet | — | 25.0 | 10.0 | 0.00 | 10.00 | 0.00 | — | — | 0.0 | Heatwave drought | Water Flow Low but flowing. | |
| Silt Trap inlet | — | 15.0 | 2.0 | 0.03 | 10.00 | 0.00 | — | — | 0.0 | Heatwave drought | Dead Fish None. Floating Debris Feather weed. Storm Damage None noted. Sewer Outflow None observed. | |
| Lake Outlet | — | 23.0 | 10.0 | 0.00 | 10.00 | 0.25 | — | — | 0.0 | Heatwave drought | Water Flow Low but flowing. | |
| Silt Trap inlet | 09:00 | 14.0 | 3.0 | 0.00 | 10.00 | 0.25 | — | — | — | Heatwave drought | Dead Fish None. Floating Debris Feather weed. Storm Damage None noted. Sewer Outflow None observed. | |
| Sheep Brook | 09:00 | — | — | 0.03 | 0.00 | — | — | — | — | Heatwave drought | — | |
| Nethercote Brook | 09:00 | — | — | 0.02 | 10.00 | — | — | — | — | Heatwave drought | — | |
| Lake Outlet | 09:00 | 22.0 | 6.0 | 0.02 | 0.00 | 0.00 | — | — | — | Heatwave drought | Water Flow Low but flowing. |
| Date | Location | Time | Water°C | Oxygenppm | Phosphateppm | Nitrateppm | Ammoniappm | pH | Air°C | Rainfallmm | Weather | Observations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Silt Trap inlet | 09:15 | 15.0 | 1.0 | 0.03 | 10.00 | 0.25 | — | — | — | — | — | |
| Lake Outlet | 09:15 | 23.0 | 4.0 | 0.03 | 8.00 | 0.25 | — | — | — | — | — |
Common questions
