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Dam Safety

This page is a coordination page, not a standalone stormwater-design standard. In the live source set, dam safety appears as a parallel authority that can supplement N.J.A.C. 7:8 when a stormwater basin or related structure falls into the separate dam-safety program.

Structured citation evidence for this page lives in the sibling claim manifest.

Regulatory Summary

The current sources support three careful statements:

  1. N.J.A.C. 7:8 is built on statutory authority that includes the Dam Safety Act.
  2. The stormwater chapter treats its own standards as minimum stormwater standards that may be supplemented by other Department programs.
  3. The broader NJDEP permitting stack identifies the Dam Safety Standards at N.J.A.C. 7:20 as a separate program administered by the Bureau of Dam Safety and Flood Control.

What this page does not do is invent a standalone dam-safety threshold table from outside the enrolled citations layer. Where project-specific dam classification is at issue, the designer still has to consult the actual dam-safety program materials and project permitting record.

Engineering Interpretation

For Green Guides purposes, the practical rule is simple:

  • use N.J.A.C. 7:8 for stormwater recharge, quality, quantity, and volumetric-reduction performance
  • check whether the basin or structure also triggers a separate dam-safety review path
  • if it does, coordinate the stormwater design with the controlling N.J.A.C. 7:20 requirements instead of assuming the stormwater rules are the only permit layer

That means dam safety is best treated as an escalation flag in the design workflow rather than as a replacement for the normal stormwater standards.

BMP Implications

The source-backed stormwater corpus points to dam-safety coordination most often in larger basin or overflow contexts, including detention, wet-pond, wetland, and infiltration systems that could be classified as dams under the separate program.

For authored guidance inside this repo, the safest implementation rule is:

  • keep the route and cross-link available for basin-scale projects
  • avoid hard-coded dam-safety trigger numbers unless they are added to the live citations layer
  • direct users back to the relevant BMP page, quantity-control page, and external dam-safety review path when a project appears to be entering that territory

Cross References