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§ 847.Issuance of Preliminary Injunction

Title 10. Actions In Particular Cases · Chapter 7. Actions Relating to Groundwater Rights · Article 13. Preliminary Injunction · Enacted 2015 · no amendments on record · Last verified July 28, 2026

In one sentenceSection 847 lets the court, after notice and a hearing, issue a preliminary injunction on a showing of long-term overdraft, and requires one if the basin is in overdraft, has been designated probationary or missed planning deadlines, and lacks an interim plan, with terms that don't determine final rights.

Full Text of § 847

Text sizeJump to: (a) (b) (c) (d) (e) (f) (g) (h)

(a) Upon a showing that the basin is in a condition of long-term overdraft, the court may, upon notice and hearing, issue a preliminary injunction.
(b) Bulletins and other reports of the department, and a report of a special master indicating that a condition of long-term overdraft exists in the basin, shall be admissible as evidence of a condition of long- term overdraft. This subdivision does not limit the admissibility of other relevant evidence.
(c) The preliminary injunction may include any of the following terms:
(1) A moratorium on new or increased appropriations of water.
(2) A limitation on, or reduction in, the diversion or extraction of water.
(3) An allocation among the parties establishing amounts of extraction allowed during the pendency of the comprehensive adjudication.
(4) Procedures for voluntary transfers.
(d) The court shall issue a preliminary injunction upon determining all of the following:
(1) The basin is in a condition of long-term overdraft.
(2) The basin has been designated as a probationary basin or the planning deadlines in subdivision (a) of Section 10720.7 of the Water Code are not being complied with.
(3) There is no interim plan in effect under Section 10735.8 of the Water Code.
(e) The court may provide a schedule for further reductions in extractions over a period of years if it finds that doing so appears reasonably necessary to achieve groundwater sustainability within the timelines provided in subdivision (b) of Section 10727.2 of the Water Code.
(f) The terms of a preliminary injunction shall not determine the rights in a final judgment of the comprehensive adjudication.
(g) A bond or undertaking shall not be required for the issuance of a preliminary injunction pursuant to this section.
(h) The court may appoint a watermaster to oversee enforcement of the preliminary injunction.

Plain-English Summary

A comprehensive adjudication can take years to reach final judgment, but a severely overdrafted basin may not be able to wait that long for relief. Subdivision (a) lets the court issue a preliminary injunction, after notice and a hearing, on a showing that the basin is in a condition of long-term overdraft as defined in § 832. Subdivision (b) says that Department of Water Resources bulletins and reports, along with a special master's report finding overdraft, are admissible evidence of that condition, without limiting other relevant evidence.

Subdivision (c) lists what the injunction may include: a moratorium on new or increased appropriations, limits or reductions on diversion or extraction, an allocation among the parties of extraction amounts allowed pending the adjudication, and procedures for voluntary transfers. Subdivision (d) makes the injunction mandatory, rather than discretionary, once three conditions are met: the basin is in long-term overdraft, it's been designated a probationary basin or missed Water Code planning deadlines, and no interim plan is in effect under the Water Code.

Subdivision (e) lets the court schedule phased reductions over time if reasonably necessary to reach sustainability within statutory timelines. Subdivision (f) protects the eventual final judgment: the preliminary injunction's terms don't determine the rights decided there. Subdivision (g) waives any bond or undertaking requirement for the injunction, and subdivision (h) lets the court appoint a watermaster to oversee enforcement.

Frequently Asked Questions

What must be shown before a court issues a preliminary injunction under this section?

A showing, after notice and hearing, that the basin is in a condition of long-term overdraft as defined in § 832.

Is the court ever required to issue this preliminary injunction?

Yes. Section 847(d) requires it once the basin is in long-term overdraft, has been designated probationary or missed planning deadlines, and lacks an interim plan under the Water Code.

What can the preliminary injunction require?

A moratorium on new appropriations, limits or reductions on extraction, an interim allocation among parties, or procedures for voluntary transfers.

Does a bond need to be posted for this injunction?

No. Section 847(g) waives any bond or undertaking requirement.

Do the injunction's terms decide the final water rights in the case?

No. Section 847(f) says the terms of a preliminary injunction don't determine the rights decided in the final judgment.

Amendment History

Added by Stats 2015 ch 672 (AB 1390),s 1, eff. 1/1/2016.

Source & verification. Section text is reproduced verbatim from the Deering's California Codes Annotated / vLex. Enacted by the California Legislature. Last verified July 28, 2026. · Official source
Also known as: preliminary injunction groundwater overdraft californiagroundwater basin overdraft injunction