P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Yeomans (Contour Diversion) Channel at a valley. Flow from the foreground. View from the upland excavation side to the North-West.
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* Yeomans Channel Water Line. ‘First is the Contour Water Line, second is the Water-Drainage Line and third is the Water-Divide Line.’ Description. High Contour Water Line of this channel (ie bank high-water mark) is the high Contour Water Line of a full Boards Dam (p4). Yeomans Channel Water Flow Rate. 27,000,000 imp. gallons/hour (122.7 ML/h). The flow speed is such that little sediment is carried. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Grazier at Carisbrooke Station, Winton QLD. Charlie is the world’s longest, continuous practitioner of Keyline (48 years). Source of Photos: Charlie Phillott. Page 1 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Yeomans (Contour Diversion) Channel at a wide ridge. Flow from the background. View from the lowland embankment to the South-East.
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* Yeomans Channel Construction (paragraphs 7, 9, 10, 11 &12). A level-blade bulldozer working laterally across the channel site was used. Specifications (Additional). Single Bank (surface* contour^) Channel with shallow excavation. Crested embankment height: 7 feet (2.1 m). Flight Photos. Black & White (p1) and Colour (p1). Notes: * ‘Surface’ means upland level. ^ P A Yeomans chose a contour channel (p3). Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 2 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Yeomans (Contour Diversion) Channel at a less wide ridge. Flow from the background. View from the upland excavation side to the East.
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* Yeomans Channel Trees. Self germinated; mimic Meteor Creek: Contour Strip Forest. Just 100 points (50 mm) of rainfall can fill the dam. Photo (p3). The ponded water height of this contour channel is the Bywash height of Boards Dam (p4). The Bywash relieves first. Note. Water ponds in this channel until the dam is lowered by irrigation etc. ^ P A Yeomans: ‘I can make water run any way, except uphill’. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 3 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham (Contour Irrigation) Channel with Lockpipe valve release. View from Boards Dam [Minimum Level (p3)] outer wall to the North.
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* Dam Lockpipe. Unbaffled, 24 inch (0.6 m) diameter (ID) spun, plain concrete. Water Flow Rate: 2,000,000 imp. gallons/hour (9.1 ML/h). Dam Lockpipe Valves. Old & New Lockpipe Designs (Mark I: Hand-made; rope pulley hand-cranked; hinged hand-wheeled sealing plate). Dam Lockpipe Valve here (Mark II). Hand-made; screw hand-cranked; framed; hinged ‘over the centre’ compression spring sealing plate. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 4 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham (Contour Irrigation) Channel during the Lockpipe release. View from the Water-Gate at Irrigation Bay No.1.to the South-East.
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* Barnham Channel Construction. A side casting, angle & tilt bulldozer used. For bank strength, channel built deeper from water side only. Specifications (Additional). Single Bank (surface* contour^) Channel with shallow excavation. Crested embankment height: 3 feet (0.9 m). Flight Photos. Black & White (p2) and Colour (p2). Notes: * ‘Surface’ means upland level. ^ This contour channel is nowhere overtopped. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 5 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham (Contour Irrigation) Channel water release under the raised Water-Gate at Irrigation Bay No.1. View from the bank to the South.
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* Barnham Channel Water-Gate Material. Frame (steel profile): Gate slide (channel)/Cross brace (angle). Gate (sheet steel): Rubber edge. Descriptions. Water-Gate: 6 feet x 2 feet (1.8 m x 0.6 m). Flow Rate: 1,000,000 imp. gallons/hour (4.5 ML/h) ie half the channel flow rate. Barnham Channel. Depth: 1 foot (0.3 m) below Water-Gate sill. Water pools after all Water-Gate releases. Two Water-Gates/Bay-Plate 6. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 6 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham Irrigation Bay No.4 is watered. Bay No.5 (upper left) is not watered. View from the Irrigation Channel Embankment to the North.
* Irrigation Bay Coverage Rate (desired depth). If 10 ML/h of water is applied to a depth of 50 mm; Rate is 20 ha/h: which converts to an; Irrigation Bay Coverage Rate. If ~2,200,000 imp. gallons/hour of water is applied to a depth of ~2 inches; Rate is ~50 acres/hour. (p10). Barnham Irrigation Bay Watering Notes. Total Area: 160 acres (64.7 ha). Total One Man Watering Time (20 ha/h & 9.1 ML/h): ~3.6 hours. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 7 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham Irrigation Bays No.1, 2 & 3 are watered. Further Bays beyond. View from the Irrigation Channel Embankment to the North-West.
* Barnham Irrigation Bay Construction. Surveyed to send water down the maximum slope. New Irrigation Bay Steering Banks from 1988. Detail. In all terrains, Keyline water is (almost only in direct irrigation) sent directly downslope as irrigating water. Even spread is critical. Photos. Black & White (p2) & The City Forest (Plate 7) 1971 both show the original ‘side cast/bank lateral earth stop on each side’ design. Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 8 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Barnham Irrigation Bays (nine) after watering. View from the scalded claypan (adjacent to the full Stock Water Dam) to the North-West.
* Irrigation Bay Pastures. A mixture of local native Mitchell & introduced Buffel Grass (both endemic) & sown Lucerne (Alfalfa) or Sorghum. Description. Sheep (uncontrollable wild dog attacks) replaced by cattle grazing across the New Steering Banks on the New Plow Pattern. 1 Notes. Extreme storm events & grazing impacts make New Steering Banks necessary in 1988. See old Barnham Irrigation Bay Photos .
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Yeomans, P.A. (1971). The City Forest. (Irrigation Bays below Boards Dam-Colour Plates 6, 7 & 8) Sydney, NSW: Keyline Publishing.
Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 9 of 10
P A Yeomans-Keyline at Carisbrooke Station (Diversion and Irrigation Channels to Irrigation Bays) 1990 Functional Plan of Channels, Dams and Irrigation Areas of Carisbrooke (2014).
Barnham Irrigation Channel Water-Gate after closing.
Photos scanned and converted in 2014 to a document by Geoffrey Booth for Keyline Archive www.youtube.com/channel/UCUPgPJZAlkxt207sxcdp4DQ/about P A Yeomans-Keyline at Carisbrooke Station [Chapter 13 in The City Forest (para. 3-14 inc) 1971] www.soilandhealth.org/01aglibrary/010127yeomansIII/010127ch13.html P A Yeomans-Keyline at Carisbrooke (25 min) 1990 www.youtube.com/watch?v=W72y_us2Sbg Charlie Phillott: Principal/Grazier at Carisbrooke Station, Winton QLD. ‘The secret with this (Keyline) system is to make running water walk’. Source of Photos: Charlie Phillott. Page 10 of 10