IDAS form 17—Watercourse diversion
(Sustainable Planning Act 2009 version3.1effective 3 August 2015)
This form must be used for development applications for operational works for a watercourse diversion.
You MUST complete ALL questions that are stated to be a mandatory requirement unless otherwise identified on this form.
For all development applications you must:
  • complete IDAS form 1—Application details
  • complete any other forms relevant to your application
  • provide any mandatory supporting information identified on the forms as being required to accompany your application.
Attach extra pages if there is insufficient space on this form.
All terms used on this form have the meaning given in the Sustainable Planning Act 2009 (SPA) or the Sustainable Planning Regulation 2009.
Note: If this development application involves a state resource, this application is not required to be supported by evidence of resource entitlement. The allocation or entitlement to the resource is a separate process and should be obtained prior to development commencing.
Mandatory requirements
1.Are the works existing?
No / Yes—date constructed (if known)
2.What are the details of the existing watercourse or water body channel proposed to be diverted?
(Give dimensions to one decimal point.)
Top width (A) / . / metres
Bottom width (B) / . / metres
Depth (D) / . / metres
Length / . / metres
Bed slope / ratio
Side slope (non-mandatory) / ratio
Flow capacity (non-mandatory) / cubic metres/second
3.What is the proposed method of diversion?
Earth channel—complete Table A / Pipeline—complete Table B
Lined channel—complete Table A
Table A—details of the proposed channel
Lining material (e.g. PVC, steel)
Top width (A) / . / metres
Bottom width (B) / . / metres
Depth (C) / . / metres
Length / . / metres
Bed slope / ratio
Side slope (non-mandatory) / ratio
Flow capacity (non-mandatory) / cubic metres/second
Table B—details of the proposed pipeline
Pipe material (e.g. PVC, steel) /
Diameter (A) / millimetres
Length / . / metres
Number of proposed pipes (non-mandatory)
Bed slope / ratio
Flow capacity (non-mandatory) / cubic metres/second
4.Is there any vegetation within the watercourse that is proposed to be cleared?
No / Yes (additional non-mandatory information can be provided to assist with assessment of application)
Non-mandatory requirements
5.What is the purpose of the proposed watercourse diversion?
Flood prevention / Divert water course
Erosion prevention / Other—provide details below
Mandatory supporting information
6.Confirm that the following mandatory supporting information accompanies this application
Plan showing: / Confirmation of lodgement / Method of lodgement
  • the location of the proposed watercourse diversion and any existing watercourse diversion
/ Confirmed
  • lot boundaries and descriptions
/ Confirmed
  • existing works
/ Confirmed
Not applicable
  • the position of any watercourses or water bodies
/ Confirmed
Not applicable
  • the position of any roads
/ Confirmed
Not applicable
  • the position of any area to be irrigated
/ Confirmed
Not applicable
  • a scaled plan showing design details of the proposed diversion.
/ Confirmed
Written documentation
Details of the proposed diversion including a description of any impacts on the existing watercourse or water body, or vegetation. / Confirmed
A statement addressing the relevant part(s) of the State Development Assessment Provisions (SDAP). / Confirmed
Not applicable
Non-mandatory supporting information
7.Confirm that the following non-mandatory supporting information accompanies this application
Other documentation / Confirmation of lodgement / Method of lodgement
Details of any vegetation within the water body or watercourse proposed to be cleared. / Confirmed
Not applicable

Privacy—Please refer to your assessment manager, referral agency and/or building certifier for further details on the use of information recorded in this form.

OFFICE USE ONLY

Date received / Reference numbers

The Sustainable Planning Act 2009is administered by the Department of Infrastructure, Local Government and Planning. This form and all other required application materials should be sent to your assessment manager and any referral agency.

IDAS form 17—Watercourse diversion

Version 3.1—3 August 2015