Senior Water Consultant

ERSG Ltd; Ringway; On-site; GBP 65,000 - 90,000; Full time

Job summary

ERSG Ltd seeks an experienced Senior Water Consultant for an interim assignment across the UK. You will lead hydraulic modelling and hydrological analyses, applying NPPF and UK policy to project assessments and contributing to technical reports and Environmental Statements.

The role emphasizes collaboration with clients and stakeholders, mentoring junior staff, and delivering water, flood risk and drainage projects to time and budget. Start December 2026.

Qualifications

• Familiarity with UK flood risk and drainage policy (NPPF).
• Experience delivering consultancy projects with programme, budget and quality focus.
• Practical use of hydraulic modelling software (Flood Modeller Pro / TUFLOW).
• Hydrological analysis using FEH methodologies and tools.
• Familiarity with ReFH2 and WINFAP.
• Competence in GIS (QGIS) and MS Office.

Responsibilities

• Support the delivery of water, flood risk and drainage consultancy projects to time and budget.
• Undertake hydraulic modelling assessments using Flood Modeller Pro and/or TUFLOW.
• Carry out hydrological analyses using FEH methods and related tools.
• Apply NPPF and UK policy knowledge to project assessments.
• Contribute to reports and Environmental Statement chapters as needed.
• Assist with drainage strategies and SuDS.

Skills

NPPF knowledge

Project delivery

Hydraulic modelling

FEH analysis

ReFH2

WINFAP

GIS (QGIS)

MS Office

Communications

Stakeholder liaison

Mentoring juniors

Tools

Flood Modeller Pro

TUFLOW

AutoCAD

Civil 3D

Causeway Flow

Job description

Senior Water Consultant

Contract Type: Interim / Temporary Contract

Start Date: December 2026

Role Overview

We are seeking an experienced Senior Water Consultant for an interim assignment supporting the delivery of water, flood risk and drainage projects across the UK. The role is ideally suited to a consultant with a strong understanding of UK flood risk and drainage policy, experience in hydraulic modelling and hydrological analysis, and the ability to contribute effectively to project delivery.

Key Responsibilities

• Support the delivery of water, flood risk and drainage consultancy projects, ensuring work meets agreed programme, budget and quality requirements.
• Undertake and contribute to hydraulic modelling assessments using relevant industry software.
• Carry out hydrological analysis using Flood Estimation Handbook (FEH) methodologies and associated tools.
• Apply knowledge of the National Planning Policy Framework (NPPF) and UK flood risk and drainage policy to project assessments.
• Contribute to technical reports, flood risk assessments and Environmental Statement chapters where required.
• Support the development and assessment of drainage strategies and Sustainable Drainage Systems (SuDS).
• Work collaboratively with project teams, clients and relevant stakeholders to achieve project objectives.
• Share technical knowledge and provide support to junior team members where appropriate.
• Assist with the preparation of technical documentation, data analysis and project deliverables.

Essential Skills and Experience

• Good understanding of the National Planning Policy Framework (NPPF) and UK flood risk and drainage policy.
• Experience supporting the delivery of consultancy projects, with an understanding of programme, budget and quality requirements.
• Practical experience using hydraulic modelling software, particularly Flood Modeller Pro and/or TUFLOW.
• Experience undertaking hydrological analysis using Flood Estimation Handbook (FEH)
• Familiarity with hydrological tools such as ReFH2 and WINFAP.
• Competence in GIS software, such as QGIS, and Microsoft Office applications.
• Strong written and verbal communication skills.
• Ability to build effective working relationships with colleagues, clients and other stakeholders.
• A collaborative approach and willingness to support and share knowledge with junior team members.

Desirable Skills and Experience

• Experience using InfoWorks ICM.
• Experience contributing to Environmental Statement chapters.
• Awareness of the Water Framework Directive (WFD).
• Understanding of drainage strategies and Sustainable Drainage Systems (SuDS).
• Experience with AutoCAD, Civil 3D and Causeway Flow.

ersg are an equal opportunities employer; we are committed to promoting equality of opportunity for all job applicants. We do not discriminate against applicants on the basis of age, sex, race, disability, pregnancy, marital status, sexual orientation, gender reassignment or religious background; all decisions are based on merit