Placement of spawning gravel in the river - Revision history

Bendikhansen: /* During planning */

2021-03-16T11:45:58Z

During planning

Bendikhansen at 09:39, 4 January 2021

2021-01-04T09:39:22Z

Bendikhansen: Text replacement - "category:Measures" to "category:Solutions"

2020-10-26T10:03:06Z

Text replacement - "category:Measures" to "category:Solutions"

Bendikhansen at 14:12, 30 September 2020

2020-09-30T14:12:07Z

Bendikhansen: /* During planning */

2020-09-30T14:11:29Z

During planning

Bendikhansen: /* During planning */

2020-09-30T14:11:13Z

During planning

Bendikhansen at 14:09, 30 September 2020

2020-09-30T14:09:07Z

Bendikhansen: /* Classification Table */

2020-09-30T12:27:45Z

Classification Table

Bendikhansen: /* Classification Table */

2020-09-30T12:27:25Z

Classification Table

Bendikhansen at 16:02, 3 June 2020

2020-06-03T16:02:44Z

@@ Line 65: / Line 65: @@
 Hydraulic analysis can support the identification of the best location to place the spawning gravel, in order to meet the preferences of the fish of concern. For typical gravel spawners, it is recommended to avoid locations with too slow-flowing water and areas exposed to flushing during high flow conditions.
-A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo2D/3D, Mike21c, OpenFoam and Telemac 2D and 3D (see Chapter 9.1 for references).
+A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo-2D/[[FLOW-3D]], Mike21c, [[OpenFOAM]] and [[TELEMAC]] 2D and 3D.
 ==During implementation==

@@ Line 4: / Line 4: @@
 Note that this measure is included in both the habitat and sediment categories.
 =Introduction=
-[[file:Eggs gravel.PNG|thumb|250px|Figure 1: Salmon eggs in gravel. The picture on the left shows high egg survival (transparent = alive) in placed spawning gravel. The picture on the left shows low survival rate in natural spawning gravel where sand has filled in much of the substrate]]
+[[file:Eggs gravel.PNG|thumb|250px|Figure 1: Salmon eggs in gravel. The picture on the left shows high egg survival (transparent = alive) in placed spawning gravel. The picture on the right shows low survival rate in natural spawning gravel where sand has filled in much of the substrate]]
 [[file:spawning_gravel_model.png|thumb|250px|Figure 2: Example of simulation results from a hydrodynamic model. Flow velocity map for ﬂow rate of 15.4 m<sup>3</sup>/s is shown at the top and for 100 m<sup>3</sup>/s at the bottom.]]
 [[file:spawning_gravel_excavator.png|thumb|250px|Figure 3: Excavator placing spawning gravel in a river.]]

← Older revision		Revision as of 10:03, 26 October 2020
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	*Forseth, T., and Harby, A. 2014. Handbook for Environmental Design in Regulated Salmon Rivers. NINA Special Report 53. Trondheim: Norwegian Institute for Nature Research.		*Forseth, T., and Harby, A. 2014. Handbook for Environmental Design in Regulated Salmon Rivers. NINA Special Report 53. Trondheim: Norwegian Institute for Nature Research.

−	[[category:Habitat measures]][[category:Sediment measures]][[category:~~Measures~~]]	+	[[category:Habitat measures]][[category:Sediment measures]][[category:Solutions]]

@@ Line 65: / Line 65: @@
 Hydraulic analysis can support the identification of the best location to place the spawning gravel, in order to meet the preferences of the fish of concern. For typical gravel spawners, it is recommended to avoid locations with too slow-flowing water and areas exposed to flushing during high flow conditions.
-A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo2D/3D, Mike21c, [[OpenFOAM]] and [[TELEMAC]] 2D and 3D.
+A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo2D/3D, Mike21c, OpenFoam and Telemac 2D and 3D (see Chapter 9.1 for references).
 ==During implementation==
@@ Line 85: / Line 86: @@
 =Relevant Literature=
 *Pulg, U., Barlaup, B.T., Skoglund, H., Velle, G., Gabrielsen, S.E., Stranzl, S.F., Espedal, E.O., Lehmann, G.B., Wiers, T., Skår, B., Normann, E., Fjeldstad, H-P. 2017. Tiltakshåndbok for bedre fysisk vannmiljø: God praksis ved miljøforbedrende tiltak i elver og bekker. Uni Research AS.
 [[category:Habitat measures]][[category:Sediment measures]][[category:Measures]]

@@ Line 65: / Line 65: @@
 Hydraulic analysis can support the identification of the best location to place the spawning gravel, in order to meet the preferences of the fish of concern. For typical gravel spawners, it is recommended to avoid locations with too slow-flowing water and areas exposed to flushing during high flow conditions.
-A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo2D/3D, Mike21c, [[OpenFOAM]] and [[Telemac]] 2D and 3D.
+A high number of hydro-dynamic and hydro-morphodynamic tools are available for such analysis with different functionality and data needs, ranging from more simplistic 1-dimensional (1D) hydraulic tools, to highly advanced 3-dimensional (3D) tools solving a range of partial differential equations (Navier-Stokes equations) in all directions. They all require detailed description of the bottom topography of the areas the gravel might be placed, and the flow regime the river will be subject to. As average flow velocities will not be sufficiently detailed to identify the best locations, 2D- or 3D models will be required. Examples of such models are [[River2D]], [[HEC-RAS|HEC-RAS 2D]], Flo2D/3D, Mike21c, [[OpenFOAM]] and [[TELEMAC]] 2D and 3D.
 ==During implementation==

← Older revision		Revision as of 14:09, 30 September 2020
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	=Relevant Literature=		=Relevant Literature=
		+	*Pulg, U., Barlaup, B.T., Skoglund, H., Velle, G., Gabrielsen, S.E., Stranzl, S.F., Espedal, E.O., Lehmann, G.B., Wiers, T., Skår, B., Normann, E., Fjeldstad, H-P. 2017. Tiltakshåndbok for bedre fysisk vannmiljø: God praksis ved miljøforbedrende tiltak i elver og bekker. Uni Research AS.

	[[category:Habitat measures]][[category:Sediment measures]][[category:Measures]]		[[category:Habitat measures]][[category:Sediment measures]][[category:Measures]]

@@ Line 83: / Line 83: @@
 =Classification Table=
 {{Placement of spawning gravel in the river}}
 =Relevant Literature=
 [[category:Habitat measures]][[category:Sediment measures]][[category:Measures]]