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Changes to Environmnet Agency Time-Series XML format from
V1.1 to v1.2

Author - James Procter
Contact - data.policy@environment-agency.gov.uk
Date - 11/23/2006
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#1 - Overtopping
New Parameter - "Overtopping"
Description - The amount of water passing over the top of a flood defence.  Expressed as either 
a flow rate per unit length, or total volume depending on units.

#2 - "m2/s"
New Unit - "m2/s"
Description - Square meters per second. (i.e. cubic metres per second per metre)

These two elements are to be used together in the following way;

Description of Data Type	Parameter	Qualifier	Data Type	Period	Units
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Overtopping Rate Peak		Overtopping	-		Maximum		15min	m2/s
Overtopping Rate Mean		Overtopping	-		Mean		15min	m2/s
Overtopping Volume		Overtopping	-		Total		15min	m3


#3 - Naturalised
New Qualifier - "Naturalised"
Description - This refers to Naturalised Flows, which are important hydrological datasets.

#4 - File Naming Changes.
Description - This is not a change to the schema but in the naming of data files themselves. The
Thames Barrier is to be identified by file naming conventions. Please contact 
data.policy@environment-agency.gov.uk for further information.

James Procter
11/23/2006