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Thanks Arjen

The DEM data we can get a hold of is a minimum of 25km2 grids with data points at 5m intervals, so has significantly higher resolution than the 1x1km grids you proposed. The cost is significant, USD1250 per 25km2. If we were to reduce this and get data points every 20m, it would cost half the price. I'm wondering if the investment is worth it seeing our partners do not have the technical knowledge to use GIS software (although they don't have surveying skills either).

On another note, the East Timor CP has trialled an iPhone application called Theodolite. From all accounts it seems to be easier to use than an abney level and theodolite. Have any of the other UK CPs utilised such an app and what has their experience been with its accuracy?

Thanks for the advice on water flow monitoring, we are already implementing this in some communities. I have recommended that communities collect water flow data once a fortnight and anecdotally record if there was rain in the preceding days prior to the monitoring to account for quick response of the surface flow compared to constant rate of groundwater flow. I did not want to burden communities by doing too much 'volunteer' work in collecting such data (hence fortnightly monitoring), however do you think we need to increase the frequency of such monitoring?

Cheers Samuel

Thanks Arjen Thanks, Arjen.

The DEM data we can get a hold of is a minimum of 25km2 25sqkm grids with data points at 5m intervals, so has significantly higher resolution than the 1x1km grids you proposed. The cost is significant, USD1250 per 25km2. 25sqkm. If we were to reduce this and get data points every 20m, it would cost half the price. I'm wondering if the investment is worth it seeing our partners do not have the technical knowledge to use GIS software (although they don't have surveying skills either).

On another note, the East Timor CP has trialled an iPhone application called Theodolite. From all accounts it seems to be easier to use than an abney level and theodolite. Have any of the other UK CPs utilised such an app and what has their experience been with its accuracy?

Thanks for the advice on water flow monitoring, we are already implementing this in some communities. I have recommended that communities collect water flow data once a fortnight and anecdotally record if there was rain in the preceding days prior to the monitoring to account for quick response of the surface flow compared to constant rate of groundwater flow. I did not want to burden communities by doing too much 'volunteer' work in collecting such data (hence fortnightly monitoring), monitoring) however do you think we need to increase the frequency of such monitoring?

Cheers Cheers, Samuel