• InfoWater Pro

Understanding Demand Allocation

Describe how geocoding meter data contributes to demand allocation.


00:04

Demand allocation in info.

00:06

Water pro allows you to calculate distribute

00:09

and manage demands in your network model.

00:13

The evolution of geographical information systems

00:15

has led to the availability of comprehensive

00:18

data sets including land use water meter locations and demand area polygons.

00:25

These data when properly processed can be effectively used

00:28

to create system demands throughout a hydraulic network model.

00:32

As a pre

00:33

allocation task,

00:34

you import GIS datasets such as all your meter records or polygon layers,

00:40

each meter in your model needs a spatial location.

00:44

You can use geo coding sources to get this data

00:47

and join it to a billing systems database to allocate demands

00:52

customer or meter billing data with distinct X and Y coordinates provide

00:56

an accurate measure of localized demands

00:58

imposed on the water distribution system.

01:01

Once you are ready to allocate demands, you can open the demand allocation manager.

01:07

There are several distinct allocation methodologies you

01:10

can use for the allocation process.

01:12

The polygon intersection method uses spatial

01:15

intersection of a demand class categorization

01:17

polygon with demand area polygon coverage

01:20

to determine the notable demand allocation

01:24

info.

01:24

Water pro allocator considers the demand area

01:26

polygons as the primary polygon coverage.

01:29

While the classes slash classifications layer is

01:32

represented as a secondary polygon definition.

01:35

During the allocation process,

01:37

the program intersects polygons of the primary

01:40

layer with those of the secondary layer.

01:43

Before using the allocator tool,

01:45

all polygons must be registered as their respective layers.

01:50

Polygon extraction is used when a polygon coverage has

01:53

already been intersected with a land base or other classification

01:57

polygon boundary and has been imported into info water pro

02:00

and registered as an info water pro allocator layer.

02:04

With this method,

02:05

the total demand at each junction node is calculated by summing all

02:09

of the individually assigned demand categorization

02:11

polygons into a single demand field.

02:14

Meter summation is used when customer billing data is available.

02:19

This allocation method uses a primary layer that represents the demand or

02:24

service area polygon coverage and a meter layer to represent meter data.

02:29

Closest junction is used when customer slash meter billing data is available

02:35

for this method. The meter layer needs to be configured.

02:38

So the demand field and optionally the usage type field contain

02:42

demand and water duty data at each of the meters.

02:46

This method provides a means to assign demands

02:48

to the junctions closest to the water meter

02:52

for each of the junction nodes.

02:53

The demands are then summed up to establish

02:56

localized demands imposed on each of the nodes.

02:59

The closest pipe method works with customer

03:02

billing data and also requires meter configuration.

03:06

The demand field and optional usage type field contain demand

03:09

and water duty data at each of the meters.

03:13

A spatial join or local search option is also available

03:17

for each of the meters. The closest pipe is first located,

03:22

the meter demands are then assigned to either the closest

03:24

upstream or downstream nodes for each of the selected pipes.

03:29

The demands routed to the nearest junction may be assigned in full or they

03:33

may be split in a weighted fashion between the two nodes connecting the pipe.

03:38

For each of the nodes,

03:39

all contributing meters are summed to represent

03:41

the total demand imposed on that node.

03:44

The meter junction method is similar to the closest junction method

03:48

but you can assign meters to be allocated to junction nodes.

03:52

In other words,

03:53

it is a user defined version of the

03:55

closest junction method which generates meter demands automatically

03:60

for the meter junction method to be employed.

04:02

You must specify which fields possess or will possess the junction ids.

04:07

Lastly,

04:08

the meter pipe allocation method is similar to the closest pipe

04:12

method but you can assign meters to be allocated to pipes.

04:15

It is a user defined version of the closest pipe method.

04:19

You must specify which fields possess or will possess the pipe ids

04:24

depending on the allocation method you use.

04:26

Relevant settings are available in the demand allocation manager.

04:31

The usage data tab of the demand allocation manager allows you to utilize

04:35

usage or land use data to apply demands to different demand categories.

04:40

You can alter customized water duty factors to

04:43

allocate demands to a specific pattern or field.

04:47

Once you perform the demand allocation,

04:49

you can view the results in the allocation report and water duty calculator.

04:54

In this report, you can compare the allocation results with usage or land use data

05:00

at this point.

05:01

You can use the meter assignment tool to view and assign

05:04

which meters are currently assigned to certain pipes or junctions.

05:08

In the map, you can review where meters are assigned indicated by red lines.

05:14

If you do reassign any meters,

05:16

you can reallocate using the meter junction or

05:18

meter pipe methods with the adjusted data.

Video transcript

00:04

Demand allocation in info.

00:06

Water pro allows you to calculate distribute

00:09

and manage demands in your network model.

00:13

The evolution of geographical information systems

00:15

has led to the availability of comprehensive

00:18

data sets including land use water meter locations and demand area polygons.

00:25

These data when properly processed can be effectively used

00:28

to create system demands throughout a hydraulic network model.

00:32

As a pre

00:33

allocation task,

00:34

you import GIS datasets such as all your meter records or polygon layers,

00:40

each meter in your model needs a spatial location.

00:44

You can use geo coding sources to get this data

00:47

and join it to a billing systems database to allocate demands

00:52

customer or meter billing data with distinct X and Y coordinates provide

00:56

an accurate measure of localized demands

00:58

imposed on the water distribution system.

01:01

Once you are ready to allocate demands, you can open the demand allocation manager.

01:07

There are several distinct allocation methodologies you

01:10

can use for the allocation process.

01:12

The polygon intersection method uses spatial

01:15

intersection of a demand class categorization

01:17

polygon with demand area polygon coverage

01:20

to determine the notable demand allocation

01:24

info.

01:24

Water pro allocator considers the demand area

01:26

polygons as the primary polygon coverage.

01:29

While the classes slash classifications layer is

01:32

represented as a secondary polygon definition.

01:35

During the allocation process,

01:37

the program intersects polygons of the primary

01:40

layer with those of the secondary layer.

01:43

Before using the allocator tool,

01:45

all polygons must be registered as their respective layers.

01:50

Polygon extraction is used when a polygon coverage has

01:53

already been intersected with a land base or other classification

01:57

polygon boundary and has been imported into info water pro

02:00

and registered as an info water pro allocator layer.

02:04

With this method,

02:05

the total demand at each junction node is calculated by summing all

02:09

of the individually assigned demand categorization

02:11

polygons into a single demand field.

02:14

Meter summation is used when customer billing data is available.

02:19

This allocation method uses a primary layer that represents the demand or

02:24

service area polygon coverage and a meter layer to represent meter data.

02:29

Closest junction is used when customer slash meter billing data is available

02:35

for this method. The meter layer needs to be configured.

02:38

So the demand field and optionally the usage type field contain

02:42

demand and water duty data at each of the meters.

02:46

This method provides a means to assign demands

02:48

to the junctions closest to the water meter

02:52

for each of the junction nodes.

02:53

The demands are then summed up to establish

02:56

localized demands imposed on each of the nodes.

02:59

The closest pipe method works with customer

03:02

billing data and also requires meter configuration.

03:06

The demand field and optional usage type field contain demand

03:09

and water duty data at each of the meters.

03:13

A spatial join or local search option is also available

03:17

for each of the meters. The closest pipe is first located,

03:22

the meter demands are then assigned to either the closest

03:24

upstream or downstream nodes for each of the selected pipes.

03:29

The demands routed to the nearest junction may be assigned in full or they

03:33

may be split in a weighted fashion between the two nodes connecting the pipe.

03:38

For each of the nodes,

03:39

all contributing meters are summed to represent

03:41

the total demand imposed on that node.

03:44

The meter junction method is similar to the closest junction method

03:48

but you can assign meters to be allocated to junction nodes.

03:52

In other words,

03:53

it is a user defined version of the

03:55

closest junction method which generates meter demands automatically

03:60

for the meter junction method to be employed.

04:02

You must specify which fields possess or will possess the junction ids.

04:07

Lastly,

04:08

the meter pipe allocation method is similar to the closest pipe

04:12

method but you can assign meters to be allocated to pipes.

04:15

It is a user defined version of the closest pipe method.

04:19

You must specify which fields possess or will possess the pipe ids

04:24

depending on the allocation method you use.

04:26

Relevant settings are available in the demand allocation manager.

04:31

The usage data tab of the demand allocation manager allows you to utilize

04:35

usage or land use data to apply demands to different demand categories.

04:40

You can alter customized water duty factors to

04:43

allocate demands to a specific pattern or field.

04:47

Once you perform the demand allocation,

04:49

you can view the results in the allocation report and water duty calculator.

04:54

In this report, you can compare the allocation results with usage or land use data

05:00

at this point.

05:01

You can use the meter assignment tool to view and assign

05:04

which meters are currently assigned to certain pipes or junctions.

05:08

In the map, you can review where meters are assigned indicated by red lines.

05:14

If you do reassign any meters,

05:16

you can reallocate using the meter junction or

05:18

meter pipe methods with the adjusted data.

Step-by-step:

Demand Allocation in InfoWater Pro allows users to calculate, distribute, and manage demands in a network model. The evolution of geographical information systems has led to the availability of comprehensive data sets, including land use, water meter locations, and demand area polygons. These data, when properly processed, can be effectively used to create system demands throughout a hydraulic network model.

As a pre-allocation task, GIS data sets are imported, such as all meter records or polygon layers. Each meter in the model needs a spatial location. Use geocoding sources to get this data and join it to a billing systems database to allocate demands. Customer or meter billing data, with distinct X and Y coordinates, provide an accurate measure of localized demands imposed on the water distribution system.

Demands are allocated using the Demand Allocation Manager. There are several distinct allocation methodologies that can be used for the allocation process:

The Demand Allocation Manager dialog box.

  1. Polygon Intersection: uses spatial intersection of a demand class categorization polygon with demand area polygon coverage to determine the nodal demand allocation. The InfoWater Pro Allocator considers the demand area polygons as the Primary polygon coverage, while the classes/classifications layer is represented as a Secondary polygon definition. During the allocation process, the program intersects polygons of the Primary layer with those of the Secondary layer. Before using the Allocator tool, all polygons must be registered as their respective layers.
  2. Polygon Extraction: used when a polygon coverage has already been intersected with a land base or other classification polygon boundary and has been imported into InfoWater Pro and registered as an InfoWater Pro Allocator layer. With this method, the total demand at each junction node is calculated by summing all the individually assigned demand categorization polygons into a single demand field.
  3. Meter Summation: used when customer billing data is available. This allocation method uses a primary layer that represents the demand (or service) area polygon coverage and a meter layer to represent meter data.
  4. Closest Junction: used when customer/meter billing data is available. For this method, the meter layer needs to be configured so the Demand Field and, optionally, the Usage Type Field contain demand and water duty data at each of the meters. This method provides a means to assign demands to the junctions closest to the water meter. For each of the junction nodes, the demands are then summed up to establish localized demands imposed on each of the nodes.
  5. Closest Pipe: works with customer billing data and also requires meter configuration. The Demand Field and optional Usage Type Field contain demand and water duty data at each of the meters. A Spatial Join or Local Search option is also available. For each of the meters, the closest pipe is first located. The meter demands are then assigned to either the closest upstream or downstream nodes for each of the selected pipes. The demands routed to the nearest junction may be assigned in full, or they may be split in a weighted fashion between the two nodes connecting the pipe. For each of the nodes, all contributing meters are summed to represent the total demand imposed on that node.
  6. Meter-Junction: similar to the closest junction method, but meters are allocated to junction nodes. In other words, it is a user-defined version of the closest junction method, which generates meter demands automatically. For the meter-junction method to be employed, the user must specify which fields possess or will possess the junction IDs.
  7. Meter-Pipe Allocation: similar to the closest pipe method, but meters are allocated to pipes. It is a user-defined version of the closest pipe method. User must specify which fields possess or will possess the pipe IDs.

Depending on the allocation method used, relevant settings are available in the Demand Allocation Manager.

The Usage Data tab of the Demand Allocation Manager allows for usage or land use data to apply demands to different demand categories. Users can alter customized water duty factors to allocate demands to a specific pattern or field.

The Demand Allocation Manager, Usage Data tab showing some different demand categories.

Once the demand allocation is performed, the results can be viewed in the Allocation Report & Water Duty Calculator. In this report, users can compare the allocation results with usage or land use data.

The Allocation Report & Water Duty Calculator, where the demand allocation results can be reviewed.

At this point, the Meter Assignment tool is used to view which meters are currently assigned to certain pipes or junctions, and to assign them. In the map, review where meters are assigned, indicated by red lines. If any meters do need to be reassigned, they can be reallocated using the Meter-Junction or Meter-Pipe methods with the adjusted data.

The Network map displaying meter assignments in red with Meter Assignment window.

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