Low water storage levels: on-farm reservoirs and design notes for engineers
Reviewed by Tom Sullivan

First reported on New Civil Engineer
30 Second Briefing
Below-average water levels in England’s strategic reservoirs are prompting industry bodies to push for easier planning and permitting of on-farm reservoirs to secure irrigation supplies. Proposals focus on small to medium earth-bunded storage ponds drawing winter high flows from local rivers or boreholes, with lined embankments and controlled abstraction to protect low summer flows. For civil and geotechnical engineers, this signals rising demand for costed designs, slope stability assessments and leakage control for numerous dispersed reservoirs on agricultural land.
Technical Brief
- Below-average levels are reported across England’s strategic reservoirs, reducing headroom for public water supply security.
- Calls target relaxation of planning and abstraction licensing specifically for agricultural on-farm storage schemes.
- Policy discussion centres on shifting part of irrigation supply risk from regional reservoirs to dispersed farm assets.
- Water companies’ current storage deficits are being used as justification for accelerating private reservoir approvals.
- Regulatory bodies are being pressed to streamline environmental assessment steps for small earthwork impoundments.
- Engineering consultancies are likely to see more small, fast-turnaround reservoir commissions rather than a few large schemes.
- For civil contractors, the pipeline implies more minor earthworks packages distributed across rural sites with variable access.
Our Take
Because New Civil Engineer’s recent coverage and events (such as the BIM/data handover webinar) emphasise asset management, on‑farm reservoirs in the United Kingdom are likely to be scrutinised not just for embankment stability but for long-term monitoring, data capture and integration with catchment-scale water planning.
For England, where many sustainability‑tagged pieces in our database revolve around urban infrastructure, shifting attention to dispersed, privately owned reservoirs implies more fragmented consenting and design standards, which could drive demand for simple, repeatable geotechnical design templates that farmers and local consultants can implement at scale.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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