Blairgowrie (Potentially Vulnerable Area 08/06)

Local Plan District Local authority Main catchment Tay Perth and Kinross Council River Ericht (River Tay)

Summary of flooding impacts Summary impacts of flooding At risk of flooding

• 30 residential properties

• 60 non-residential properties • £120,000 Annual Average Damages

(damages by flood source

shown left)

Summary of objectives to manage flooding

Objectives have been set by SEPA and agreed with flood risk management authorities. These are the aims for managing local flood risk. The objectives have been grouped in three main ways: by reducing risk, avoiding increasing risk or accepting risk by maintaining current levels of management. Objectives

Many organisations, such as Scottish Water and energy companies, actively maintain

and manage their own assets including their risk from flooding. Where known, these

actions are described here. Scottish Natural Heritage and Historic Environment Scotland work with site owners to manage flooding where appropriate at designated environmental and/or cultural heritage sites. These actions are not detailed further in the Flood Risk Management Strategies.

Summary of actions to manage flooding The actions below have been selected to manage flood risk.

Flood Natural flood New flood Community Property level Site protection protection management warning flood action protection plans scheme/works works groups scheme Actions

Flood Natural flood Maintain flood Awareness Surface water Emergency protection management warning raising plan/study plans/response study study

Maintain flood Strategic Flood Planning Self help Maintenance protection mapping and forecasting policies scheme modelling

Tay Local Plan District Section 2 76 Blairgowrie (Potentially Vulnerable Area 08/06)

Local Plan District Local authority Main catchment Tay Perth and Kinross Council River Ericht (River Tay)

Background

This Potentially Vulnerable Area is The area has a risk of surface water and 20km² (shown below). It is situated in river flooding. The majority of damages the upper reaches of the River Tay are caused by surface water flooding. catchment and includes Blairgowrie. The main watercourse is the River There are approximately 30 residential Ericht. properties and 60 non-residential properties at risk of flooding. The Annual Average Damages are approximately £120,000.

River 25%

Surface water 75%

Figure 1: Annual Average Damages by flood source

Summary of flooding impacts

The greatest risk of flooding in this area is to Rattray (Blairgowrie) from surface water.

The risk of flooding to people, property, as well as to community facilities, utilities, the transport network, designated sites and agricultural land is summarised in Table 1. The damages associated with floods of different likelihood are shown in Figure 2. For this Potentially Vulnerable Area the highest damages are to residential properties followed by damages to non-residential properties.

The location of the impacts of flooding is shown in Figure 3.

The figures presented for Annual Average Damages include damages to residential properties, non-residential properties, transport and agriculture.

77 Section 2 Tay Local Plan District 1 in 10 1 in 200 1 in 1000 High likelihood Medium likelihood Low likelihood Residential properties <10 30 100 (total 3,300) Non-residential properties 20 60 80 (total 700) People 20 70 210 Community <10 Emergency <10 Emergency 0 facilities services services Utilities assets <10 <10 <10 Transport links 2 A roads, 1 B road 3 A roads, 1 B road 3 A roads, 1 B road (excluding minor at 10 locations at 17 locations at 20 locations roads) Environmental designated areas 0.5 0.5 0.5 (km2) Designated cultural 6 9 9 heritage sites Agricultural land 2 1.4 2.3 2.7 (km )

Table 1: Summary of flooding impacts

£5,000,000 £4,500,000 £4,000,000 £3,500,000 Agriculture

£3,000,000 Vehicles £2,500,000 Roads

Damages £2,000,000 Non-residential £1,500,000 Residential £1,000,000 £500,000 £0 1 in 10 1 in 50 1 in 100 1 in 200 1 in 1000

Figure 2: Damages by flood likelihood

Tay Local Plan District Section 2 78

Figure 3: Impacts of flooding

79 Section 2 Tay Local Plan District History of flooding

On 22 January 1928 there was extensive flooding from the River Tay across Perth and Kinross including Blairgowrie. The River Tay reached 5.77m above normal levels at Smeaton’s Bridge in Perth.

Tay Local Plan District Section 2 80 Objectives to manage flooding in Potentially Vulnerable Area 08/06

Objectives provide a common goal and shared ambition for managing floods. These objectives have been set by SEPA and agreed with flood risk management authorities following consultation. They were identified through an assessment of the underlying evidence of the causes and impacts of flooding. Target areas have been set to focus actions; they do not necessarily correspond to areas at risk in SEPA’s flood map. The objectives below have been set for Blairgowrie Potentially Vulnerable Area.

Target area Objective ID Indicators within PVA Blairgowrie and Reduce economic damages and number 8012 * See note below Rattray of residential properties at risk of surface water flooding in Blairgowrie and Rattray where practical Applies across Avoid an overall increase in flood risk 8001 • 30 residential Tay Local Plan properties District • £120,000 Annual Average Damages Applies across Reduce overall flood risk 8041 • 30 residential Tay Local Plan properties District • £120,000 Annual Average Damages Applies across Organisations such as Scottish Water, Tay Local Plan energy companies and Historic District Environment Scotland actively maintain and manage their own assets, including the risk of flooding. These actions are not detailed further in the Flood Risk Management Strategies. * This objective will be monitored using surface water flood risk across the Potentially Vulnerable Area. For 08/06 there are 20 residential properties at risk and Annual Average Damages of £91,000.

81 Section 2 Tay Local Plan District Actions to manage flooding in Potentially Vulnerable Area 08/06

Actions describe where and how flood risk will be managed. These actions have been set by SEPA and agreed with flood risk management authorities following consultation. Selection of actions to deliver the agreed objectives was based on a detailed assessment and comparison of economic, social and environmental criteria. The actions shaded and then described below have been selected as the most appropriate for Blairgowrie Potentially Vulnerable Area.

Selected actions

Flood Natural flood New flood Community Property level Site protection protection management warning flood action protection plans scheme/works works groups scheme

Flood Natural flood Maintain flood Awareness Surface water Emergency protection management warning raising plan/study plans/response study study

Maintain flood Strategic Flood Planning Self help Maintenance protection mapping and forecasting policies scheme modelling

Action (ID): SURFACE WATER PLAN/STUDY (80120018)

Objective (ID): Reduce economic damages and number of residential properties at risk of surface water flooding in Blairgowrie and Rattray where practical (8012) Delivery lead: Perth and Kinross Council

Status: Not started Indicative delivery: 2016-2021

Description: The area must be covered by a surface water management plan or plans that set objectives for the management of surface water flood risk and identify the most sustainable actions to achieve the objectives.

Action (ID): STRATEGIC MAPPING AND MODELLING (80410019)

Objective (ID): Reduce overall flood risk (8041)

Delivery lead: Scottish Water

Status: Not started Indicative delivery: 2016-2021

Scottish Water will carry out an assessment of flood risk within the Description: highest risk sewer catchments to improve knowledge and understanding of surface water flood risk.

Tay Local Plan District Section 2 82 Action (ID): MAINTAIN FLOOD WARNING (80410030)

Objective (ID): Reduce overall flood risk (8041)

Delivery lead: SEPA