Any drainage experts on here
- Thread starter onthehoof
- Start date
Tarw Coch
Member
- Location
- Bottom of Wats Dyke
Not forgetting his side kick, @Hurdle bunter
Will Blackburn
Member
- Location
- Cheshire
Hatched lines likely represent old drains that have not been cleaned/rodded. Where they run next too solid drain lines it is likely the drain is superseded by the solid line but the old hatched drain is likely to be joined into the newer drain.
- Location
- Near Beeston Castle
My plans are difficult to make sense of too, I think the big numbers are length of run rather than distance apart. On mine hatches, solid lines and a combination f the two are used to denote different diameter pipes.
- Location
- Welshpool Powys
Numbers alongside drains would be the length those on ditch side I would think they are the distance the laterals are apart.
Broken lines could be an existing drain that the drain runs along side or denotes pipe size.
Lots of variations in drainage maps dependent on who drew them up and at what time in history.
Broken lines could be an existing drain that the drain runs along side or denotes pipe size.
Lots of variations in drainage maps dependent on who drew them up and at what time in history.
- Location
- Welshpool Powys
Also to add some very old drainage plans are marked in ‘chains’ which equates to 22yards if my memory is correct.
Made a start on 1st plan, working up from bottom found first drain at 60ft from bottom ditch, whats the next one up? assume 155ft then 101ft but what does the 249ft represent, the next one doesn’t look like 172ft
is 249 is the distance from the original start point? My maps and distance never work out the same.
is 249 is the distance from the original start point? My maps and distance never work out the same.
Hindsight
Member
- Location
- Lincolnshire
1 Hatching signifies backfill over those pipes.
2 Numbers in the body of the map adjacent to a black line signify the length of that particular pipe run.
3 Numbers at the outfall into the ditch signify space apart of outfalls.
Looks to be denoted in imperial - in feet.
Age of maps and schemes? Is that written on the maps somewhere with the drainage contractor name - and if grant aided MAFF number / signature? Was the scheme completed - presume so, or a draft?
2 Numbers in the body of the map adjacent to a black line signify the length of that particular pipe run.
3 Numbers at the outfall into the ditch signify space apart of outfalls.
Looks to be denoted in imperial - in feet.
Age of maps and schemes? Is that written on the maps somewhere with the drainage contractor name - and if grant aided MAFF number / signature? Was the scheme completed - presume so, or a draft?
There's one clue to age the railway line is marked as LNER which will put it pre 1948
Hindsight
Member
- Location
- Lincolnshire
Doesn't that just mean a map was used which had the rail line marked as LNER. I could use the same map today in 2021?!. The old Parish field numbering system of single numbers is also on the map. I would expect the drainage plan is circa 1960's but the original poster can give us a better idea of the date.
70’s I believe
Hindsight
Member
- Location
- Lincolnshire
Thank you - I almost put 60's early 70's. I saw so many of these maps as a youngster. Was it a MAFF grant aided scheme?
When we turn up to sort drains out and the farmer lands out with some sort of map, its great!!!!
Yes the facts and figures take some identifiying but once you get the hang of it they are worth their weight in gold and can save you hours of endless looking.
Usually we find they might just need a jet out or sometimes if the old drains havnt been gravelled up we do that.
Good luck in your searching and dont get the map covered in mud or wet!! Infact get some photocopies 1st!!!
And never forget to add on any extra drai age you put in.
Yes the facts and figures take some identifiying but once you get the hang of it they are worth their weight in gold and can save you hours of endless looking.
Usually we find they might just need a jet out or sometimes if the old drains havnt been gravelled up we do that.
Good luck in your searching and dont get the map covered in mud or wet!! Infact get some photocopies 1st!!!
And never forget to add on any extra drai age you put in.
It was before we owned it but assume if a grant was available it would have be used
- Location
- Acton Scott, South Shropshire
thats the problem weve had with a lot of our rented ground - drains are all there, just buried under 6"-12" of mud where ditches havent been cleared for years. Transformed the ground where we have got the drains working again.
- Location
- Scottish Highlands
Pop along to your local public library and ask the librarian to recommend some text books on land drainage published in the 1950s -1970s era. That's what they are trained to do and if they don't have them in house they should be able to get a copy through Inter-Library Loan. (A copy of every book published has to be deposited in your National library by law). All it costs you is the postage. A fantastic resource we will lose if we don't use it. Those books should have a description of conventions and symbols used on maps.
I wonder if maps deposited with the authorities are lurking in some store or other? If grant money was paid out, surely there should be a record?
I wonder if maps deposited with the authorities are lurking in some store or other? If grant money was paid out, surely there should be a record?
- Tags
- drainage