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month to March 27th 2019

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Sonny & ...

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details

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PM_catchment_briefs (003) non OU version

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Subcatchment maps Carding Mill

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Subcatchment areas with flow data March 14th 2019

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Subcatchment areas with flow data March 14th 2019

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Finding out and recording

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month to March 14th 2019

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Find grid references online

The quickest way to find a grid reference of a location is to go to the OS Maps desktop version and right click on the location - it's that simple! You should see two letters followed by two sets of five numbers like this SZ 65750 98047. If you're using the OS Maps app then you'll need to press and hold to find the grid reference for that location. It will follow the same format as the above.

Another great grid reference finder is the OS Locate app which you can use to pinpoint your exact location.

Of course, we all know there's nothing more reliable than a paper map and compass when venturing out into the hills. So, it's important to know how to find your location (grid reference) on a paper map to let others know (like Mountain Rescue) know where you are. To do this, you need to understand the National Grid.

Find grid references with a paper map

Understanding the National Grid

Eastings and Northings

You might have noticed by now that OS Maps are covered in a series of blue grid lines. These grid lines help you to pinpoint an exact location anywhere on the map. The vertical lines are called 'eastings', as they increase in value as you travel east on the map. The horizontal lines are called 'northings' as they increase in value as you travel north on the map.

These are linked to the National Grid which provides a unique reference system, and can be applied to all OS Maps of Great Britain, at all scales. Great Britain is covered by grid squares measuring 100 kilometres across and each grid square is identified by two letters, as shown in diagram A.

On OS Maps, these squares are further divided into smaller squares by grid lines representing 10 kilometre spacing, each numbered from 0 to 9 from the south west corner, in an easterly (left to right) and northerly (upwards) direction. You can see this in diagram B.

Using this eastings and northings system you can identify a 10 kilometre grid square. For example, the above image shows TL63. After the letters you can quote the eastings (6) first, then the northings (3).

​Top Tip

If you have trouble remembering the order, say... along the corridor, THEN up the stairs.

On an OS Landranger map you can find the two main grid letters (in this case TL) on the legend or the corner squares of the map. The grid is further divided into 1 kilometre intervals, as shown in diagram C.

How do grid references help me find places?

If you haven't got OS Maps or OS Locate or you're using a paper map, it is easy to find a particular place using a grid reference. To start, a four-figure grid reference is a handy way of identifying any square on a map. Grid references are easy if you can remember that you always have to go along the corridor before you go up the stairs. To find the number of a square first use the eastings to go along the corridor until you come to the bottom left-hand corner of the square you want.

Write this two-figure number down. Then use the northing to go up the stairs until you find the same corner. Put this two‑figure number after your first one and you now have the four-figure grid reference, which looks like the example in diagram D: 6233.

4-figure grid references

What this short 'how to' video with Steve Backshall

Six-figure grid references

If you want to pinpoint an more exact place on a map, such as your own house, you will need to use a six-figure grid reference. First find the four-figure grid reference for the square and write it down with a space after each set of numbers, like this: 62_ 33_

Now imagine this square is divided up into 100 tiny squares with 10 squares along each side. Still remembering to go along the corridor and up the stairs, work out the extra numbers you need and put them into your four-figure grid reference like this in diagram E: 625 333.

Top tip

When giving directions you can provide even more accuracy to your grid reference by stating a nearby landmark or feature. For example, on the Bembridge OS Explorer map I am at grid reference SZ 644 874, at the crossroads.

What this short 'how to' video with Steve Backshall

Put your new skills into practice and get out your OS Map to have a go at finding a few grid references. Check out our Pathfinder guide titled Navigation Skills for Walkers including map reading, compass and GPS.

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Beginner's guide to grid references | OS GetOutside

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The quickest way to find a grid reference of a location is to go to the OS Maps desktop version and right click on the location - it's that simple! You should see two letters followed by two sets of five numbers like this SZ 65750 98047.

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The way it flows

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All meals and food in Dining Room. (Except cake, which will be in the kitchenette)
Breakfast & PL pickup: 08:00-09:00
Dinner: 18:00-19:00

Morning start time: 09:30
Evening start time: 19:00

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Understanding Latitude and Longitude

Latitude and Longitude: Your Global Address
Every location on earth has a global address. Because the address is in numbers, people can communicate about location no matter what language they might speak. A global address is given as two numbers called coordinates. The two numbers are a location's latitude number and its longitude number ("Lat/Long").

Credit: Illinois State University

Grid Mapping
Using Lat/Long is different from using a street address. Instead of having a specific street address, Lat/Long works with a numbered grid system, like what you see when you look at graph paper. It has horizontal lines and vertical lines that intersect. A location can be mapped or found on a grid system simply by giving two numbers which are the location's horizontal and vertical coordinates; or, to say it another way, the "intersection" where the place is located).

Grid Mapping a Globe:
Latitude and Longitude lines are a grid map system too. But instead of being straight lines on a flat surface, Lat/Long lines encircle the Earth, either as horizontal circles or vertical half circles.

Latitude
Horizontal mapping lines on Earth are lines of latitude. They are known as "parallels" of latitude, because they run parallel to the equator. One simple way to visualize this might be to think about having imaginary horizontal "hula hoops" around the earth, with the biggest hoop around the equator, and then progressively smaller ones stacked above and below it to reach the North and South Poles. (Can you think of other ways to visualize the parallels of Latitude?)

Latitude lines are a numerical way to measure how far north or south of the equator a place is located. The equator is the starting point for measuring latitude--that's why it's marked as 0 degrees latitude. The number of latitude degrees will be larger the further away from the equator the place is located, all the way up to 90 degrees latitude at the poles. Latitude locations are given as __ degrees North or __ degrees South.

Longitude
Vertical mapping lines on Earth are lines of longitude, known as "meridians". One simple way to visualize this might be to think about having hula hoops cut in half, vertically positioned with one end at the North Pole and the other at the South Pole.

Longitude lines are a numerical way to show/measure how far a location is east or west of a universal vertical line called the Prime Meridian. This Prime Meridian line runs vertically, north and south, right over the British Royal Observatory in Greenwich England, from the North Pole to the South Pole. As the vertical starting point for longitude, the Prime Meridian is numbered 0 degrees longitude.

To measure longitude east or west of the Prime Meridian, there are 180 vertical longitude lines east of the Prime Meridian and 180 vertical longitude lines west of the Prime Meridian, so longitude locations are given as __ degrees east or __ degrees west. The 180 degree line is a single vertical line called the International Date Line, and it is directly opposite of the Prime Meridian.

Try it!
The Mystery Class Challenge

Mystery Class is a global game of hide-and-seek. Students track seasonal changes in sunlight to find ten secret sites around the world. More...

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Understanding Latitude and Longitude Latitude and Longitude: Your Global Address Every location on earth has a global address. Because the address is in numbers, people can communicate about location no matter what language they might speak. A global address is given as two numbers called coordinates.

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Every 3 metre square has a unique 3 word address.

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A range of general resources

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A research background

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Sub Surface flow

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Results and processing

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Everything

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Spreadsheet

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Presentation

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About a national  approach

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Water quality training resources for CaBA partners to show what sort of information can be obtained from different types of water quality monitoring data, and to make available a suite of tools and resources to help access and analyse existing data, and plan future collaborative monitoring strategies.

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Historic

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Theo

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Air

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Various data