dissenting.
It is respectfully submitted that the court has not taken a sufficiently broad view of the issues presented by the record. The defendants in error defend their act's by alleging that they were done pursuant to the compact made by Colorado and New Mexico'. The plaintiff replies, in substance, that the acts of the defendants were done in disregard of the Colorado court decrees and laws, and therefore deprived the plaintiff of its vested rights. If this does not present squarely the question of the validity and effect of the compact, I am unable to imagine a case that would do so. It is obvious that the legality of the defendants’ acts depends upon the validity and terms of the compact; therefore we cannot very well avoid a consideration thereof.
"Where a person invokes a statute, or a treaty, or a compact, or an agreement, as a justification for his act's, and its validity is challenged by his adversary, the question of its validity is presented to the court for determination. Citation of the many authorities that sustain this position is unnecessary. Three will suffice. See Poole v. Lessee of Fleeger, 11 Pet. 185; Wharton v. Wise, 153 U. S. 155, 14 Sup. Ct. 783; Georgetown v. Alexandria Canal Co., 12 Pet. 91, 9 L. Ed. 1012.
It is not necessary to a determination of the question presented by this record that the United States, or the state of Colorado, or the state of New Mexico should be parties to this suit. The fact that the decision in this case would not be res adjudicata as to them does not re*135lieve the court- of the duty of passing upon the question submitted.
What are the respective rights of Colorado and New Mexico in the waters of the La Plata river?
It has been decided that the upper’ state on an interstate stream does not have such ownership or control of the waters flowing therein as entitles it to divert and use them regardless of any injury or prejudice to the rights of the lower state in the stream. Kansas v. Colorado, 185 U. S. 125, 22 Sup. Ct. 552; Wyoming v. Colorado, 259 U. S. 419, 42 Sup. Ct. 552. Section 5, article XVI, of the Colorado Constitution, declaring that the water of every natural stream within the state is the property of the public and is dedicated to the use of the people of the state, does not alter the situation; that section applies only as between this state and the people of this state. Each state on an interstate stream is entitled to an equitable share of its waters. In controversies between such states the effort is to secure an equitable division or apportionment. Kansas v. Colorado, supra. In Wyoming v. Colorado, supra, it is said that as both states have adopted the doctrine of appropriation, such doctrine “furnishes the only basis which is consonant with the principles of right and equity applicable to such a controversy,” and that, “its application to such a controversy as is here presented cannot be other than eminently just and equitable to all concerned.” However, in two later cases (decided in 1931), where the states concerned had adopted the common-law doctrine of riparian rights, the court refused to apply the riparian-right doctrine in determining the controversy, and applied instead the principle of equitable apportionment. Connecticut v. Massachusetts, 282 U. S. 660, 51 Sup. Ct. 286; New Jersey v. New York, 283 U. S. 336, 51 Sup. Ct. 478. In the latter case the court said: “Both States have real and substantial interests in the River that must be reconciled as best they may. The different traditions and practices in different parts of the country may lead to vary*136ing results, but the effort always is to secure an equitable apportionment without quibbling over formulas. * * * This case was referred to a Master and a great mass of evidence was taken. In a most competent and excellent report the Master adopted the principle of equitable division which clearly results from the decisions of the last quarter of a century.”
These cases justify the conclusion that each state is entitled to an equitable share of the waters of an interstate stream, and that where both states have adopted the doctrine of appropriation the relative priorities of the appropriations should be considered as of controlling importance in ascertaining what that equitable share is.
When a controversy arises between two states concerning their rights in the waters of such a stream, must those states, in order to have the controversy determined, resort to litigation with its attendant expense and delay, or may they settle the controversy by compact? It seems clear that with the consent of Congress they may pursue the latter course. Their right to do so does not depend upon a grant of power. Powers are reserved by, not granted to, the states. The tenth amendment provides: “The powers not delegated to the United States by the constitution, nor prohibited by it to the states, are reserved to the states, respectively, or to the people.” Article I, sec. X, par. 2, of the U. S. Constitution provides: “No state shall, without the consent of congress, * * * enter into any agreement or compact with another state. ” As to powers not delegated to the United States, the states are sovereign. Chisholm v. Georgia, 2 Dali. (U. S.) 419; M’Culloch v. Maryland, 4 Wheat. 316. Sovereign states may settle their controversies by treaty or by war. The Constitution deprived the states of the right to resort to the latter remedy, and substituted therefor a suit in the Supreme Court. So the two remedies remaining are compact and litigation. Either may be invoked, the former with the consent of Congress. *137It has been held that there are cases where such consent is not necessary, but we are not concerned with them, for here Congress gave its consent. Counsel call our attention to a list of fifty-five instances where compacts between states have been approved by Congress. Interstate compacts have been made concerning boundaries, the taking of fish in boundary rivers, navigation, irrigation rights, and other matters.
The Supreme Court of the United States has suggested repeatedly the desirability of settling interstate controversies by compact. In Rhode Island v. Massachusetts, 12 Pet. 657, the court said: “Bound hand and foot by the prohibitions of the constitution, a complaining state can neither treat, agree, nor fight with its adversary without the consent of congress; a resort to the judicial power is the only means left for legally adjusting or persuading a state which has possession of disputed territory, to enter into an agreement or' compact relating to a controverted boundary. Few, if any, will be made, when it is left to the pleasure of the state in possession; but when it is known that some tribunal can decide on the right, it is most probable that controversies will be settled by compact.” That language was quoted in Kansas v. Colorado., supra, wherein the court said also: “* * * compacts and agreements might be very properly applied ‘to such as regarded what might be deemed mere private rights of sovereignty; such as questions of boundaries; interests in land situate in the territory of each other; and other internal regulations for the mutual comfort and convenience of States bordering on each other. ’ 2 Story, Const. §§1402, 1403; Louisiana v. Texas, 176 U. S. 1.” In the Kansas-Colorado controversy Congress had not consented to a compact, and in view of that situation the court, by Mr. Justice Brewer, used this' language: “If the two states were absolutely independent nations it would be settled by treaty or by force. Neither of these ways being practicable, it must be settled by decision of this court.” Kansas v. Colorado, 206 U. S. 46, 98, 27 *138Sup. Ct. 655. In Washington v. Oregon, 214 U. S. 205, 29 Sup. Ct. 631, the court, after calling attention to compacts made by other states, made this suggestion: “We submit to the States of Washington and Oregon whether it will not be wise for them to pursue the same course, and, with the consent of Congress, through the aid of commissioners, adjust, as far as possible, the present appropriate boundaries between the two States and their respective jurisdiction.” In New York v. New Jersey, 256 U. S. 296, 41 Sup. Ct. 492, the court said: “We cannot withhold the suggestion, inspired by the consideration of this case, that the grave problem of sewage disposal presented by the large and growing populations living on the shores of New York Bay is one more likely to be wisely solved by cooperative study and by conference and mutual concession on the part of representatives of the states so vitally interested in it than by proceedings in any court however constituted. ’ ’ Acting, no doubt, upon the suggestions made by that gTeat court, the western states have resorted extensively to compacts as the most satisfactory way of settling controversies over their rights in the waters of interstate streams.
The Colorado-New Mexico compact was made by the two states, acting through their Legislatures, and was ratified by Congress. It is' the law of the land, unless it is made to appear beyond a reasonable doubt that it is in conflict with the federal or the state Constitution.
In the majority opinion it is said: “There is not the slightest pretense, either in this compact itself or in the proceedings leading up to it, to a decision of the question of what water Colorado owns, or what water New Mexico owns, or what their respective citizens' own. It is a mere compromise of presumably conflicting claims, a trading therein, in which the property of citizens is bartered, without notice or hearing, and with no regard to vested rights.” In 1921 the Legislature of this state passed an act for the appointment of a. commissioner to represent Colorado upon a joint commission “for the purpose of *139negotiating and entering into a compact or agreement between said states [i. e., Colorado and New Mexico], with consent of Congress, respecting the future utilization and disposition of the waters of the La Plata River, and all streams tributary thereto, and fleeing and determining the rights of each of said states to the use, benefit and disposition of the waters of said stream.” S. L. 1921, c. 244. The Legislature of New Mexico passed a similar act. S. L. 1921, c. 147. There is a presumption that the commission regularly pursued the authority vested in it, that it performed its duties properly, and that it acted only after due investigation and consideration of all the material facts, including, as required by the court in Wyoming v. Colorado, supra, the appropriations of water in both states, and the relative priorities of such appropriations. We should not assume, in the absence of a contrary showing — and there is no such showing here— that the commission acted otherwise; for example, that its members traded or bartered away the property or rights of citizens in disregard of the plain provisions of the statutes creating the commission. The plaintiff introduced no evidence of the proceedings of the commission, or of the facts and circumstances that controlled it in drafting the tentative compact for submission to the two Legislatures, and no evidence that it failed to consider all relevant facts. It does appear from the report of the Colorado commissioner that the proposed compact provided “for the equitable distribution of the waters of the La Plata river.” That the commission considered the appropriations in both states, and their relative priorities, is evident from the report, which deals in general terms with the priority of use in New Mexico and Colorado, and the aggregate quantity of water diverted in New Mexico. Colorado Senate Journal for 1923, p. 67, et seq. The compact itself provides: “The waters of the La Plata River are hereby equitably apportioned between the signatory States, including the citizens thereof, as follows:” The record, therefore, reinforces *140the presumption of regularity, though such presumption requires no such support, the burden, as we have seen, being upon the one asserting that the commission did not perform its duty properly to sustain such assertion by proof. Moreover, the compact was the act, not of the joint commission, but of the two sovereign states, acting through their Legislatures, after ample opportunity to investigate and consider all of the facts. And with the same opportunity, Congress ratified the compact. An act of the Legislature, of course, is presumed to be constitutional, and one assailing it as in conflict with the Constitution must show beyond any reasonable doubt that the two are in conflict.
Does the compact deprive the plaintiff of its property without due process of law? It would seem not.
The compact did not interf ere with any vested right of the plaintiff. The right that is vested in the plaintiff is the right to use, in the order of its adjudicated priority, a part of the La Plata river waters belonging to the state of Colorado; it has no right whatever to any of the water belonging* to the state of New Mexico, for Colorado cannot confer such rig’ht, or malee a valid contract to do so. The compact determines the equitable share belonging’ to each state. Neither state can confer upon any person the rig’ht to use water belonging to the other state. The priority decreed to the plaintiff’s ditch is not interfered with; it must be satisfied, however, only out of Colorado’s equitable share of the La Plata river waters. All appropriations in each state were made subject to the rights of the other state in the waters of the stream, precisely the samé as if that limitation were written in the water decrees.
The compact provides that when the mean daily flow of water at the Interstate Station is 100 cubic feet or more per second, each state shall have the unrestricted right to use all of the waters within its boundaries; and that, “On all other days the State of Colorado shall deliver at the Interstate Station a quantity of water' equiva*141lent to one-half of the mean flow at the Hesperus Station for the preceding day, but not to exceed one hundred cubic feet per second.” It also provides: “Whenever the flow of the river is so low that in the judgment of the State Engineers of the States, the greatest beneficial use of its waters may be secured by distributing all of its waters successively to the lands in each State in alternating- periods, in lieu of delivery of water as provided in the second paragraph of this Article, the use of the waters may be so rotated between the two States in such manner, for such periods, and to continue for such time as the State Engineers may jointly determine.” The La Plata river is a small stream having unusual seepage conditions. Kinney, in section 909 of his work on Irrigation and Water Rights (2d Ed.), says: “As was said before, irrigation experts and hydraulic engineers agree upon the proposition that rotation in the use of water, especially in cases where the supply is small, not only gives a higher duty to an available water supply, but it tends directly to suppress the actual waste of the water.” That statement is amply supported by the testimony of the state engineer of Colorado and that of the interstate engineer. There seems to be no good reason why, by compact, two sovereign states may not measure the equitable share of each by time as well as by quantity, in order to save waste and obtain the utmost beneficial use of the water for the development of both states. Anderson v. Bassman, 140 Fed. 14, was a controversy between parties who resided in different states and claimed water rights in an interstate stream. Delivering- the opinion of the Circuit Court, Judge Morrow said: “The right of each is to have a reasonable apportionment of the water of the stream during- the season of the year when it is scarce. But to divide the water so as to' allow a certain number of inches to the complainants and a certain number of inches to the defendants is plainly impracticable. The only method that appears to provide a just and equitable division is some fair and appropriate division in *142time by which the complainants and defendants shall have .the use of the water alternately during the dry season. I shall therefore direct that a decree be entered restraining the defendants from diverting the waters of the West Pork of the Carson River in excess of five days in every ten days during the months of June, July, August, September, and October in each year.”
There can be no valid objection to the compact on the ground that it entrusts to the engineers of both states, acting jointly, the administrative duty of carrying out the rotation provision of the compact. The compact could not regulate Such a matter by hard-and-fast rules. Conditions that vary from time to time make it necessary to entrust to irrigation experts some measure of discretion, and who better qualified for the task than the two state engineers? In Wisconsin v. Illinois, 278 U. S. 367, 49 Sup. Ct. 163, Wisconsin, Minnesota, Ohio and Pennsylvania sought an injunction to prevent the taking of water from Lake Michigan in such manner as permanently to divert the water from the lake. Congress had conferred upon the chief engineers and the secretary of war the authority to determine the amount of water that may be diverted from a lake without impairing navigability. The court upheld the act as not a delegation of legislative power, saying that such determination is peculiarly an expert question. And see: People v. Colorado Title & Trust Co., 65 Colo. 472, 178 Pac. 6; 6 R. C. L. p. 174. The objection that if under the compact the officers can rotate for a week they can rotate for a month or a year, is unsound. The answer is that if they should attempt an abuse of their power, the courts could, and upon proper application would, restrain them.
I cannot find any evidence to sustain the intimation that the compact was made without notice to the plaintiff and those claiming under it and without giving them a hearing. If notice and a hearing were necessary to the validity of the compact — and they were not — the burden was upon the plaintiff to prove that there was no notice *143or hearing. No siich proof or offer of such proof was made. Answering the intimation, counsel for the defendants in error made this statement in their answering brief, and it was not challenged by opposing counsel: “The suggestion is made that the owners of decrees in Colorado were given no opportunity to be heard * * *. Counsel feel impelled to state that a number of public meetings were held which were attended by representatives of the Thompson Park section. The matter was thoroughly discussed and every effort made to learn the true facts before closing’ the Compact. ’ ’ Moreover, the water decrees are matters of record, and complete data concerning them were in possession of the state engineer, who, according to the report of the Colorado Commissioner, was in charge- of investigations as the expert for Colorado. It is inconceivable that the commission acted without full information; the presumption is that it did not so- act, and there is no showing* to the contrary.
The compact was made, as all interstate compacts are made, by sovereign states, and when such compacts are made they are binding upon the states and all citizens of the states.
Virginia and Kentucky entered into a compact relating to the Ohio river. Concerning the effect of that compact, it was said by the court: “This Compact by the sanction of Congress has become a law of the Union. * * * In the case of Green v. Biddle, 8 Wheat. 1, this court held that a law of the state of Kentucky which was in violation of this compact between Virginia and Kentucky, was void; and they say this court has authority to declare a state law unconstitutional upon the ground of its impairing’ the obligation of a compact between different states of the Union.” Pennsylvania v. Wheeling & Belmont Bridge Co., 13 How. 518. In Lessee of Marlatt v. Silk, 11 Pet. 1, a suit between private parties, a compact between Pennsylvania and Virginia came into question. The following is qitoted from the opinion: “ * * * in the case at bar, the question arises under, and is to be decided by, a *144compact between two states': where, therefore, the rule of decision is not to be collected from the decisions of either state, but is one, if we may so speak, of an international character.” Speaking of the right of states to malm compacts and of the effect of such compacts, the. court said, in Rhode Island v. MassacJnosetts, siopra: “If congress consented, then the states were in this respect restored to their original inherent sovereignty; such consent being the sole limitation imposed by the constitution, when given, left the states as they were before, as' held by this court in Poole v. Fleeger, 11 Pet. 209; whereby their compacts become of binding force, and finally settled the boundary between them; operating with the same effect as a treaty between sovereign powers. That is, that the boundaries so established and fixed by compact between nations, become conclusive upon all the subjects and citizens thereof, and bind their rights, and are to be treated to all intents and purposes, as the true real boundaries. ’ ’
Compacts settling’ water controversies have the same effect as decrees of court determining such controversies ; both bind the citizens of the states, though not parties thereto. In Kansas v. Colorado, 206 U. S. 46, 27 Sup. Ct. 655, the court said: “While several of the defendant corporations have answered, it is unnecessary to specially consider their defenses, for, if the action against Colorado' fails, it fails also against them.” And in the second case of Wyoming v. Colorado, 286 U. S. 494, 52 Sup. Ct. 621, brought to restrain an alleged violation of the decree rendered in the first case (185 U. S. 125), the court held (syllabus 2): “In a suit between two States to determine the relative rights of each and of their respective citizens to divert water from an interstate stream, private appropriates are represented by their respective States and need not be made parties to be bound by the decree.” In Poole v. Lessee of Fleeger, supra, Mr. Justice Story said: “The compact, then, has full validity, and all the terms and conditions of it must *145be equally obligatory upon the citizens of both states.” In Georgetown v. Alexandria Canal Co., supra, the court said: “The compact made in the year 1785, between Virginia and Maryland, was made by the two states in their character as states. The citizens, individually, of both commonwealths, were subject to all the obligations imposed, and entitled to all the benefits conferred by that compact. ’ ’
Being of the opinion that the plaintiff has not sustained the burden resting upon it of showing that the Colorado-New Mexico compact is unconstitutional, or that its enforcement in the present case deprived the plaintiff of some lawful right, I respectfully dissent from the decision and the opinion of the court.