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Property records · PR-19

Rainfall Drainage Observation Log

A free printable rainfall drainage log: downpipes, gullies and drains numbered on a site sketch, then what each did in heavy rain and any damp inside.

First page of the Rainfall Drainage Observation Log — Pin down where rainwater gets in by watching what it does around the house in a downpour. Outside and inside go on the same line, so the link shows.
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2 pages. Choose your paper size — both versions are laid out identically, so neither one gets shrunk to fit.

Print it and write on it

Fill it in type and save

The fillable versions have real form fields — open them in any PDF reader, type into them and save. Printing help.

What this sheet is for

Pin down where rainwater gets in by watching what it does around the house in a downpour. Outside and inside go on the same line, so the link shows.

Who it is for

Homeowners and landlords chasing damp, a wet cellar or puddling against the walls, and the surveyors helping them.

How to use it

  1. Sketch the house and number each downpipe, gully and drain; describe each one in the table under the sketch.
  2. In heavy rain, watch from cover and note what each point did: overflowing gutters, where the water went, and where it pooled.
  3. Check inside for damp or seepage the same day and note the room and wall.
  4. Write each fix in the follow-up table, and note whether the next heavy rain was better.

What is on the sheet

2 pages, in this order:

Page 1

Printed under the title: What water does around the house in heavy rain: every downpipe, gully and drain numbered on a sketch, then what each one did, where water pooled, and any damp inside, so the way in can be pinned down.

Describe the rain in words. No rainfall figures are needed: describe the rain in words, or copy a reading from a local weather station if you want one. Watch from indoors or under cover while it pours and go out once it eases. A drain that backs up into the property is one for your water company or a drainage contractor.

Write-on lines: Property · Started · Kept by

Site sketch — draw the house, then number each downpipe (D1), gully (G1) and drain (R1)

Squared grid

Drainage points — one line per number on the sketch

Table, 5 rows: No. · Type · Where · Discharges to · Condition

Page 2

Observations in rain — one line per point that did something worth noting

Table, 13 rows: Date · Rain · Point · Gutter · Water went · Pooling · To wall · Inside · Photo

Follow-up — extend a downpipe, clear a gully, regrade, repair

Table, 4 rows: Point · Action · By whom · Cost · Done · Next heavy rain

Questions

Do I need a rain gauge?

No. Describing the rain in words, such as light, steady or a downpour, and how long it lasted is enough to compare one storm with the next. If you want a figure, copy it from a local weather station rather than guessing.

How does this help with damp inside?

Damp that appears after rain, near a downpipe that empties against the wall or ground that falls toward it, points to the outside rather than condensation. Putting the observation and the damp inside on the same line makes that link visible.

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