(1) This article, except for sections 37-92-201 and 37-92- 202, does not apply to: (a) Designated groundwater basins as defined and established by article 90 of this title; (b) Wells not exceeding fifteen gallons per minute of production and used for ordinary household purposes, fire protection, the watering of poultry, domestic animals, and livestock on farms and ranches and for the irrigation of not over one acre of home gardens and lawns but not used for more than three single-family dwellings; (c) Wells not exceeding fifteen gallons per minute of production and used for drinking and sanitary facilities in individual commercial businesses; (d) Wells to be used exclusively for fire-fighting purposes if said wells are capped, locked, and available for use only in fighting fires; (e) Wells not exceeding fifty gallons per minute that are in production as of May 22, 1971, and were and are used for ordinary household purposes for not more than three single- family dwellings, fire protection, the watering of poultry, domestic animals, and livestock on farms and ranches, and for the irrigation of not over one acre of gardens and lawns; (f) Wells to be used exclusively for monitoring and observation purposes if said wells are capped and locked and used only to monitor water levels or for water quality sampling; and (g) (I) Any system or method of collecting precipitation from the roof of a building that is used primarily as a residence and is not served by, whether or not connected to, a domestic water system that serves more than three single-family dwellings, but only if the use of the water thus collected is limited to one or more of the following: (A) Ordinary household purposes; (B) Fire protection; (C) The watering of poultry, domestic animals, and livestock on farms and ranches; or (D) The irrigation of not more than one acre of gardens and lawns. (II) As used in subparagraph (I) of this paragraph (g), "a building that is used primarily as a residence" may include, but is not limited to, any structure used for habitation, regardless of whether the structure is operated commercially or inhabited intermittently. (III) On and after July 1, 2009, any person wishing to use a system or method of rooftop precipitation capture that qualifies as exempt under subparagraph (I) of this paragraph (g) shall comply with one of the following provisions of sub-subparagraph (A), (B), or (C) of this subparagraph (III): (A) A person who has a well permit issued or recorded pursuant to this section and who intends to use a system or method of rooftop precipitation capture that qualifies as exempt under subparagraph (I) of this paragraph (g) shall file, on a form prescribed by the state engineer and consistent with this section, a notice and description of the system or method of rooftop precipitation capture to be used in conjunction with the well. No fee shall be charged for the filing of this form. (B) A person who applies for a new well permit pursuant to this section and who intends to use a system or method of rooftop precipitation capture that qualifies as exempt under subparagraph (I) of this paragraph (g) shall include on the well permit application a description of the system or method of rooftop precipitation capture to be used in conjunction with the well. An applicant under this sub-subparagraph (B) shall pay the well permit application fee pursuant to subparagraph (II) of paragraph (a) of subsection (3) of this section; however, such applicant shall not be required to pay any additional application fee for the rooftop precipitation collection system. (C) A person who does not intend to construct and use a well, but would otherwise be entitled to the issuance of a well permit pursuant to this section, including the provisions of subsection (6) of this section, shall submit an application in the form and manner designated by the state engineer for a permit to install and use a system or method of rooftop precipitation capture and pay a fee in an amount to be determined by the state engineer. If the state engineer determines that the proposed system or method of rooftop precipitation capture meets the requirements of this paragraph (g), the state engineer shall issue a permit for the system or method, but not otherwise. The state engineer shall enforce the provisions of the permit in the same manner as the enforcement of any well permit issued under this section. (IV) A person using or legally entitled to use a well pursuant to this section, including the provisions of subsection (6) of this section, shall be allowed to collect rooftop precipitation pursuant to this paragraph (g) only for use by the same dwellings that are or would be served by the well and subject to all of the limitations on use contained in the well permit or, in the absence of a well permit, the well permit to which the person would be legally entitled, as determined by the state engineer. (V) (A) The state engineer or the division engineers may issue, to the users of methods or systems of rooftop precipitation collection, orders necessary to implement the provisions of this paragraph (g). If such orders are given orally, they shall be confirmed promptly in writing. (B) In the event that an order of a division engineer or the state engineer issued pursuant to sub-subparagraph (A) of this subparagraph (V) is not complied with, the state engineer, in the name of the people of the state of Colorado, through the attorney general, shall apply to the water judge of the particular division for an injunction enjoining the person from committing the violation. In such proceeding, if the court upholds the order of the state engineer, the person against whom such order was issued shall pay the costs of the proceeding, including reasonable attorney fees. (C) Any person who violates an order issued by the state engineer pursuant to sub- subparagraph (A) of this subparagraph (V) shall forfeit and pay a sum not to exceed five hundred dollars for each violation. Any fine collected for violations of this paragraph (g) shall be transmitted to the state treasurer, who shall credit the same to the water resources cash fund created in section 37-80-111.7 (1). (1.5) A person withdrawing water from a well pursuant to this section may use graywater through use of a graywater treatment works, as those terms are defined in section 25- 8-103 (8.3) and (8.4), C.R.S., in compliance with the requirements of section 25-8-205 (1)(g), C.R.S. Any limitations on use set forth in the well permit apply to the use of graywater. (2) With respect to applications filed prior to May 8, 1972, the state engineer shall issue a permit for the construction of wells specified in subsection (1) of this section without regard to the provisions of section 37-90-137 (2) and (3) upon submission of an application which shall be accompanied by a fee of five dollars. It is the legislative intent that the exemption in subsection (1) of this section is for an applicant to obtain a water supply for his own use. (3) (a) (I) Repealed. (II) Effective July 1, 2006, wells of the type described in paragraphs (b) to (d) of subsection (1) of this section may be constructed only upon the issuance of a permit in accordance with the provisions of this subsection (3). A person desiring to use such a well shall submit an application for a permit accompanied by a fee of sixty dollars for an application under paragraph (c) of this subsection (3) and a fee of one hundred dollars for an application under paragraph (b) of this subsection (3). (b) (I) With respect to applications filed on and after May 8, 1972, the state engineer shall first make a determination as to whether or not the exercise of the requested permit will materially injure the vested water rights of others or any other existing well, subject to the provisions of subparagraph (II) of this paragraph (b). If the state engineer finds that the vested water rights of others or any other existing well will be materially injured, he shall deny the permit. Otherwise, the permit shall be issued, and it shall set forth such conditions for drilling, casing, equipping, and using the well as are reasonably necessary to prevent waste, pollution, or material injury to existing rights. The state engineer shall endorse upon the application the date of its receipt, file and preserve such application, and make a record of such receipt and the issuance of the permit in his office, so indexed as to be useful in determining the extent of the uses made from various groundwater sources. (II) (A) If a permit is sought by a user for a well exempted under paragraph (b) of subsection (1) of this section which will be the only well on a residential site, which well will be used solely for ordinary household purposes inside a single-family dwelling and will not be used for irrigation or will be the only well on a tract of land of thirty-five acres or more or will be the only well on a cluster development lot, serving one single-family residence, where the ratio of water usage in the cluster development does not exceed one acre-foot of annual withdrawals for each thirty-five acres within the cluster development and will be used solely for the purposes specified in paragraph (b) of subsection (1) of this section, and the return flow from such uses shall be returned to the same stream system in which the well is located, there shall be a presumption that there will not be material injury to the vested water rights of others or to any other existing well resulting from such well, which presumption may be rebutted by evidence sufficient to show such material injury. (B) and (C) (Deleted by amendment, L. 93, p. 2100, § 1, effective July 1, 1993.) (D) Nothing in this section shall be construed to preclude the state engineer from requiring metering of withdrawals, periodic reporting of such withdrawals, and cessation of withdrawals that exceed one acre-foot of water for each thirty-five acres within a cluster development. (III) Except as specified in subsection (3)(b)(IV) of this section, if the application is for a well, as defined in subsection (3)(b)(II) of this section, which will be located in a subdivision, as defined in section 30-28-101 (10), and approved on or after June 1, 1972, pursuant to article 28 of title 30, for which the water supply plan has not been recommended for approval by the state engineer, the cumulative effect of all such wells in the subdivision shall be considered in determining material injury. (IV) If an existing well was permitted under the presumption set forth in subsection (3)(b)(II)(A) of this section, the presumption is not lost if: (A) The land on which the well is located is divided into multiple parcels; (B) The well is used on only a single parcel of the divided land and remains the only well serving that parcel; (C) With respect to the parcel of the land that the well still serves, the permit holder continues to use the well in accordance with subsections (1)(b) and (3)(b)(II)(A) of this section; and (D) The permit holder provides return flows in accordance with subsection (3)(b)(II)(A) of this section. (c) (I) If any person wishes to relocate an existing well of the type specified in paragraphs (b) to (e) of subsection (1) of this section, such person shall file an application pursuant to this subsection (3) for the construction of a well and shall state in such application such person's intent to abandon the existing well which is to be relocated. (II) (A) If such relocated well will not change substantially the usage of water which can lawfully be made by means of the existing well, a permit to construct and use the relocated well shall be issued, and the existing well shall be abandoned within ninety-one days after the completion of the relocated well. (B) For purposes of this subparagraph (II), absent a showing by a preponderance of the evidence, a relocated well will be presumed not to change substantially the usage of water if the existing well was constructed pursuant to a permit issued by the state engineer, the location of the relocated well will be within two hundred feet of the existing well, the well will be constructed into the same aquifer, the historical use of water from the well will not change, the annual volume of use of the relocated well will be the same as or less than the annual permitted volume of use of the existing well, and the gallons per minute flow of the relocated well will be the same as or less than the permitted gallons per minute flow of the existing well. (d) (I) Repealed. (II) Effective July 1, 2006, wells for which permits have been granted or may be granted shall be constructed within two years after the permit is issued, which time may be extended for successive years at the discretion of the state engineer for good cause shown. (e) The state engineer shall act upon an application filed under this subsection (3) within forty-nine days after such filing and shall support his or her ruling with a written statement of the basis therefor, and the provisions of article 4 of title 24, C.R.S., shall apply. (f) Any person aggrieved by a decision of the state engineer granting or denying an application filed under this subsection (3) may within thirty-five days after such decision file a petition for review with the water clerk of the water division in which the well is located. Upon receipt of such petition, the water judge of said water division shall promptly conduct such hearings as are necessary to determine whether or not the decision of the state engineer shall be upheld. In any case in which the state engineer's decision is reversed, the water judge shall order the state engineer to grant or to deny the application, as such reversal may require, and may specify such terms and conditions as are appropriate. Appeals from any decision of the water judge shall be made as in other civil actions. (4) Notwithstanding the provisions of the introductory portion of subsection (1) of this section, water rights for wells of the type specified in paragraphs (b) to (e) of said subsection (1) may be determined pursuant to sections 37-92-302 to 37-92-306; except that the original priority date of any such well may be awarded regardless of the date of application therefor. (5) (a) Repealed. (b) Effective July 1, 2006, any wells exempted by this section that were put to beneficial use prior to May 8, 1972, and any wells that were used exclusively for monitoring and observation purposes prior to August 1, 1988, not of record in the office of the state engineer may be recorded in that office upon written application, payment of a processing fee of one hundred dollars, and permit approval. The record shall include the date the water is claimed to have been appropriated or first put to beneficial use. (6) It is hereby declared to be the policy of the state of Colorado that the exemptions set forth in this section are intended to allow citizens to obtain a water supply in less densely populated areas for in-house and domestic animal uses where other water supplies are not available. It is not the intent that these wells be used to cause material injury to prior vested water rights, and, wherever possible, persons seeking the use of such individual wells may be required to develop plans for augmentation pursuant to section 37-92-302 or to develop other replacement plans acceptable to the state engineer. (7) Notwithstanding the amount specified for any fee in this section, the state engineer by rule or as otherwise provided by law may reduce the amount of one or more of the fees if necessary pursuant to section 24-75-402 (3), C.R.S., to reduce the uncommitted reserves of the fund to which all or any portion of one or more of the fees is credited. After the uncommitted reserves of the fund are sufficiently reduced, the state engineer by rule or as otherwise provided by law may increase the amount of one or more of the fees as provided in section 24-75-402 (4), C.R.S. (8) (a) The general assembly hereby declares that storm water detention and infiltration facilities, post-wildland fire facilities, and fire suppression ponds are essential for the protection of public safety and welfare, property, and the environment. (b) As used in this subsection (8): (I) A "storm water detention and infiltration facility" means a facility that is operated solely for storm water management and: (A) Is owned or operated by a governmental entity or is subject to oversight by a governmental entity; (B) Continuously releases or infiltrates at least ninety-seven percent of all of the water from a rainfall event that is equal to or less than a five-year storm within seventy-two hours after the end of the rainfall event; (C) Continuously releases or infiltrates all of the water from a rainfall event greater than a five-year storm as quickly as practicable, but in all cases releases or infiltrates at least ninety- nine percent of all of the water from the rainfall event within one hundred twenty hours after the end of the rainfall event; and (D) Operates passively and does not subject the storm water runoff to any active treatment process. (II) A "post-wildland fire facility" means a facility that is: (A) Not permanent; (B) Located on, in, or adjacent to a nonperennial stream; (C) Designed and operated solely for the mitigation of the impacts of wildland fire events; and (D) Designed and operated to minimize the quantity of water detained and the duration of the detention of water to the levels necessitated by public safety and welfare. (III) "Fire suppression pond" means a pond with water that may be used in a fire emergency, which pond has been: (A) Identified as a potential fire suppression pond by a board of county commissioners in consultation with a fire protection district or fire authority pursuant to section 37-82-107; and (B) Designated as a fire suppression pond by the state engineer pursuant to section 37- 80-124. (c) (I) Storm water detention and infiltration facilities in existence on August 5, 2015, that are operated in compliance with paragraphs (b) and (e) of this subsection (8) and post- wildland fire facilities that are operated in compliance with paragraphs (b) and (e) of this subsection (8) do not cause material injury to vested water rights. (II) (A) The holder of a vested water right may bring an action in a court of competent jurisdiction to determine whether the operation of a storm water detention and infiltration facility constructed after August 5, 2015, has caused material injury to that water right. Operation of the facility in compliance with paragraphs (b) and (e) of this subsection (8) creates a rebuttable presumption that the facility does not cause material injury to vested water rights if the operation of the facility approximates and does not cause a material reduction in the natural hydrograph with respect to peak flows that would have existed without the upstream urban development that results in the storm water being managed by the storm water detention and infiltration facility. (B) The holder of a vested water right who brings an action under sub-subparagraph (A) of this subparagraph (II) may rebut the presumption established by sub-subparagraph (A) of this subparagraph (II) with evidence sufficient to show that the operation of the storm water detention and infiltration facility has caused material injury to the water right by modifying the amount or timing of water that would have been available for diversion by the water right absent the operation of the facility under hydrologic conditions that existed as of the water right's priority date, excluding flows resulting from development of impervious surfaces within the drainage that created the need for the storm water detention and infiltration facility. (d) An entity that owns, operates, or has oversight for a storm water detention and infiltration facility constructed after August 5, 2015, shall, prior to operation of the facility, provide notice of the location and approximate surface area at design volume of the facility and the data that demonstrates that the facility has been designed to comply with sub-subparagraphs (B) and (C) of subparagraph (I) of paragraph (b) of this subsection (8) to all parties on the substitute water supply plan notification list maintained by the state engineer pursuant to section 37-92-308 (6) for the water division in which the facility is located. (e) (I) Water detained or released by a storm water detention and infiltration facility or post-wildland fire facility shall not be used for any purpose, including, without limitation, by substitution or exchange, by the entity that owns, operates, or has oversight over the facility or that entity's assignees, and is available for diversion in priority after release or infiltration. (II) An entity shall not release water detained by a storm water detention and infiltration facility or post-wildland fire facility for the subsequent diversion or storage by the person that owns, operates, or has oversight over the facility or that entity's assignees. (III) The operation of a storm water detention and infiltration facility or post-wildland fire facility is not the basis for a water right, credit, or other right to or for the use of water. (f) A person who installed or operated a post-wildland fire facility shall ensure that the facility is removed or rendered inoperable after the emergency conditions created by the wildfire no longer exist. (g) Nothing in this subsection (8) alters, amends, or affects any otherwise applicable requirement to obtain a state or local permit for a storm water management facility or post- wildland fire facility constructed on or after August 5, 2015. (h) The provisions of this subsection (8) relating to storm water detention and infiltration facilities do not apply to Fountain creek and its tributaries, except for facilities required by or operated in compliance with a Colorado discharge permit system municipal separate storm sewer system permit issued by the department of public health and environment pursuant to article 8 of title 25, C.R.S. (i) If a board of county commissioners applies to the state engineer for the designation of a fire suppression pond pursuant to section 37-82-107, and the requirements of section 37-80- 124 (10) and any rules promulgated by the division of fire prevention and control pursuant to section 37-82-107 (5) are satisfied, the proposed fire suppression pond is presumed to cause no material injury to the vested water rights of others. A holder of a decreed water right may rebut the presumption by providing evidence to the state engineer sufficient to show that material injury has occurred or will occur to the decreed water right. (9) (a) The general assembly hereby declares that stream restoration projects are essential for the protection of public safety, welfare, property, and the environment. (b) As used in this subsection (9), unless the context otherwise requires: (I) "Minor stream restoration activity" means any or all of the following activities: (A) Stabilizing the banks or substrate of a natural stream with hard, bioengineered, or natural materials that, under less than extreme flow conditions, allow water to flow downstream, do not cause the water level to exceed the ordinary high water mark, and may incidentally increase surface area of the natural stream; (B) Mechanical grading of the ground surface along a natural stream system in a manner that does not result in groundwater exposure, diversions of surface water, or the collection of storm water; (C) Stabilizing an ephemeral or intermittent natural stream by installing deformable and porous structures into the banks and substrate, which may incidentally and temporarily increase surface area or infiltration; (D) Daylighting a natural stream that has been piped or buried; (E) Reducing the surface area of a natural stream to address reductions in historical flow amounts; and (F) Installing structures or reconstructing a channel in a natural stream system for the sole purpose of recovery from the impacts of a wildland fire or flood emergency. (II) "Natural stream" has the meaning set forth in section 37-87-102 (1)(b). (III) "Natural stream system" means the extent of a natural stream in the state and the geomorphic floodplain and associated riparian area. (IV) "Stream restoration project" means a project that is designed and constructed: (A) Within a natural stream system; and (B) For the purposes of wildland fire mitigation; flood mitigation; bank stabilization; water quality protection or restoration; habitat, species, or ecosystem restoration; source water protection; infrastructure protection; or sediment and erosion management. (c) If a stream restoration project is limited to one or more minor stream restoration activities: (I) The stream restoration project does not cause material injury to any vested water right; and (II) The stream restoration project is not an unnecessary dam or other obstruction. (d) The owner or proponent of a stream restoration project shall not install the stream restoration project in a manner that adversely affects the function of structures used to divert water or measure water flow by holders of vested water rights without the permission of the owners of the structures. (e) Notwithstanding any provision in this subsection (9) to the contrary, nothing in this subsection (9): (I) Creates a presumption of injury for any activity that does not meet the definition of a minor stream restoration activity pursuant to subsection (9)(b)(I) of this section; (II) Creates a basis for a water right, credit, or other right for the use of water; (III) Creates precedent for the litigation of, creates a legislative determination of, alters, or affects any real property interests, including express or prescriptive flowage easements affecting land along a public stream held by any political subdivision or person; (IV) Prohibits the state engineer from taking any action necessary to comply with an interstate compact, interstate apportionment decree, or interstate agreement; (V) Alters, amends, or affects any federal, state, or local law or requirement that otherwise applies to a stream restoration project; or (VI) Impairs or in any way affects the ability of any person to appropriate water for purposes related to a stream restoration project. (f) A stream restoration project that has obtained any applicable permits or is under construction or completed by August 1, 2023, does not cause material injury to any vested water right and is not an unnecessary dam or other obstruction.
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