Denio & Taylor Mill Ditch Company
- Town
- Denver
- Basin
- Metro
- Organized
- 1920
- Standing with the Colorado Secretary of State
- In good standing
- Colorado SOS entity ID
- 19871071481
- Principal office address on state record
- 401 Main St Unit 2, Longmont, CO 80501
- Registered agent
- THE DENIO & TAYLOR MILL DITCH COMPANY
- Water source
- Saint Vrain Creek
- Earliest decreed right
- 1862 per Colorado DWR records
Sources: Colorado Secretary of State business records as of August 3, 2026 (standing, principal office address, registered agent, formation date, entity ID), and Colorado Department of Water Resources net-amount records as of August 11, 2026 for the water source and earliest decreed right, including rights recorded only as alternate-point/exchange (APEX) amounts (each links to the state's own record). Compiled by DitchBook from public records, not edited by the company — how this page is built and what it can't tell you.
Official directory contact
Contact Denio & Taylor Mill Ditch Company
- Contact
- Angie Swanson, Secretary/Treasurer
- Phone
- 303-776-7207
- angie@dangrantbookkeeping.com
This contact was published in a 2026 official public directory. Source checked August 15, 2026; source listing: Denio & Taylor Ditch; sources: Boulder County 2026 Ditch and Reservoir Directory; SVLH official directory page. The company has not claimed or edited this page.
Contact details can change. Represent the company? Update or remove this contact.
Verified public water record
Water structure
| Structure | WDID | Type and source | DWR location | Map |
|---|---|---|---|---|
| Denio Taylor Ditch | 0500548 | Ditch Saint Vrain Creek |
Boulder County · Division 1 · District 5 | View on map |
Published from DitchBook's verified company-to-WDID crosswalk as of August 17, 2026, using Colorado DWR structure records pulled August 11, 2026. Open a structure for its source fields, exact map status, company association, and official water-right citation. This table does not say that any particular parcel is served by, owns shares in, or is crossed by the structure.
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Water-right portfolio
9 additional rights recorded only as alternate-point/exchange (APEX) net amounts are not shown in this table.
Denio Taylor Ditch — WDID 0500548
Scroll the table sideways to see every column.
| Priority / admin no. | Appropriation | Adjudication | Decreed amount | Absolute or conditional | Decreed uses |
|---|---|---|---|---|---|
| 5675 | July 15, 1865 | June 2, 1882 | 22.62 cfs | absolute | Irrigation |
| 8689 | October 15, 1873 | June 2, 1882 | 6.78 cfs | absolute | Irrigation |
| 11841.08689 | October 15, 1873 | March 13, 1907 | 4 cfs | absolute | Industrial |
| 9283 | June 1, 1875 | June 2, 1882 | 11.78 cfs | absolute | Irrigation |
As of 2026-07-27, DWR Water Rights Net Amounts. Absolute rights are decreed for water already put to use; conditional rights hold a place in line for use not yet completed. Amounts are shown exactly as the state records them. How this page is built.
Water-right lineage
This timeline puts WDID 0500548’s decreed rights (Denio Taylor Ditch) — the same rights as the portfolio above — in chronological order by appropriation date (oldest first), grouped by decade. It reflects DWR’s current net-amounts tabulation, not a complete decree history: intermediate decrees, changes, and abandonment proceedings exist only in the underlying court case files. It is not a title opinion and not a complete chain of title.
9 additional rights recorded only as alternate-point/exchange (APEX) net amounts are not included in this timeline.
1860s
-
July 15, 1865
22.62 cfs, absolute, for Irrigation. Adjudicated June 2, 1882 — DWR associated-case reference: CA1379.
1870s
-
October 15, 1873
6.78 cfs, absolute, for Irrigation. Adjudicated June 2, 1882 — DWR associated-case reference: CA1379.
-
October 15, 1873
4 cfs, absolute, for Industrial. Adjudicated March 13, 1907 — DWR associated-case reference: CA1379.
-
June 1, 1875
11.78 cfs, absolute, for Irrigation. Adjudicated June 2, 1882 — DWR associated-case reference: CA1617.
As of 2026-07-27, DWR Water Rights Net Amounts. DWR's associated-case references are shown verbatim from its bulk water-rights export, as of 2026-08-11 — some entries are date-like artifacts of DWR's own data, not case numbers; DitchBook has not verified them against court files. How this page is built.
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Irrigated acreage history
These snapshots track state-mapped parcel linkage to the listed structures; they do not measure the company's operations or status.
- Alfalfa
- Grass Pasture
- Small Grains
| Snapshot year | Total acres | Largest crop that year |
|---|---|---|
| 1956 | 367.1 | Alfalfa |
| 1976 | 163.4 | Alfalfa |
| 1987 | 143.8 | Alfalfa |
| 1997 | 84.2 | Grass Pasture |
| 2001 | 84.2 | Grass Pasture |
| 2005 | 83 | Grass Pasture |
| 2010 | 83 | Grass Pasture |
| 2015 | 83 | Grass Pasture |
| 2020 | 63.3 | Grass Pasture |
Source: CDSS Division 1 Irrigated Lands snapshots (1956, 1976, 1987, 1997, 2001, 2005, 2010, 2015, 2020). These parcels are the ones the state links to WDID 0500548. The parcels are mapped by the State of Colorado, not by the company and not by DitchBook. The state's mapping for this company includes parcels the state also links to a groundwater (well) supply; parcels the state maps to this company's structures alone. Where parcels are shared with other structures or linked to a well, the acres shown are not all served by this company's ditch alone. How this page is built.
Irrigated land linked to this company
- 2020 irrigated-parcel footprint (state-mapped)
- Service area (vintage 2005) — context only
The 2020 state-mapped irrigated-parcel footprint linked to this company's structures lies in Boulder County, on Saint Vrain Creek. It covers about 63.3 acres.
Footprint: state-mapped irrigated parcels for WDID 0500548, 2020 snapshot, from CDSS Irrigated Lands. The dashed outline is a service-area layer (vintage 2005) shown for context only — it is not used for any figure on this page; source: CDSS Div1_Canals package, Div1_Ditch_Service_Area_2005. Satellite imagery is available via the map's Satellite/Map toggle, courtesy of USDA/USGS (The National Map), public domain. Boundaries are the state's, drawn to locate the land, not to settle it. How this page is built.
Recorded diversions
Scroll the table sideways to see every column.
- Published record
- Provisional record (not final)
- Water year 2026 (partial)
| Year | Total acre-feet | Record |
|---|---|---|
| 1950 | 315.4 | published |
| 1951 | 1,140.5 | published |
| 1952 | 1,096.9 | published |
| 1953 | 722 | published |
| 1954 | 753.7 | published |
| 1955 | 569.3 | published |
| 1956 | 902.5 | published |
| 1957 | 1,055.2 | published |
| 1958 | 539.5 | published |
| 1959 | 694.2 | published |
| 1960 | 587.1 | published |
| 1961 | 357 | published |
| 1962 | 478 | published |
| 1964 | 279.7 | published |
| 1965 | 366.9 | published |
| 1966 | 301.5 | published |
| 1967 | 440.3 | published |
| 1968 | 499.8 | published |
| 1969 | 767.6 | published |
| 1970 | 916.4 | published |
| 1971 | 882.7 | published |
| 1972 | 720 | published |
| 1973 | 763.6 | published |
| 1974 | 553.4 | published |
| 1975 | 648.6 | published |
| 1976 | 545.5 | published |
| 1977 | 339.2 | published |
| 1978 | 1,325 | published |
| 1979 | 1,001.7 | published |
| 1980 | 597 | published |
| 1981 | 575.2 | published |
| 1982 | 503.8 | published |
| 1983 | 841 | published |
| 1984 | 874.7 | published |
| 1985 | 773.6 | published |
| 1986 | 902.5 | published |
| 1987 | 654.6 | published |
| 1988 | 676.4 | published |
| 1989 | 576 | published |
| 1990 | 508.8 | published |
| 1991 | 650.6 | published |
| 1992 | 924.3 | published |
| 1993 | 1,204 | published |
| 1994 | 1,172.3 | published |
| 1995 | 908.2 | published |
| 1996 | 957.7 | published |
| 1997 | 712.9 | published |
| 1998 | 802.5 | published |
| 1999 | 743.4 | published |
| 2000 | 733.7 | published |
| 2001 | 520.5 | published |
| 2002 | 336.4 | published |
| 2003 | 818 | published |
| 2004 | 673 | published |
| 2005 | 612.3 | published |
| 2006 | 896.9 | published |
| 2007 | 713.5 | published |
| 2008 | 704.8 | published |
| 2009 | 598.4 | published |
| 2010 | 406.1 | published |
| 2011 | 1,018.8 | published |
| 2012 | 735.3 | published |
| 2013 | 695.9 | published |
| 2014 | 1,015.9 | published |
| 2015 | 730.5 | published |
| 2016 | 398.5 | published |
| 2017 | 1,316.5 | published |
| 2018 | 723.8 | published |
| 2019 | 896.4 | published |
| 2020 | 634.3 | published |
| 2021 | 741.5 | published |
| 2022 | 878.9 | published |
| 2023 | 933.4 | published |
| 2024 | 1,036.2 | published |
| 2025 | 804.9 | published |
| 2026 (partial water year) | 0 | partial water year |
As of 2026-07-27, DWR diversion records for WDID 0500548. Annual values follow the DWR water year (November–October). Years marked provisional are DWR's own provisional records — the state has not finalized them, and they are drawn with a dashed outline above. All other years are published records. Water year 2026 is partial and will change as DWR records are updated. A diversion record is what the state's records show ran through the headgate; it is not a share, an entitlement, or a company allocation. How this page is built.
Sources for this profile
- DWR Water Rights Net Amounts — pulled 2026-07-27
- DWR bulk water-rights export (per-right associated-case references) — pulled 2026-08-11
- CDSS Division 1 Irrigated Lands snapshots — 1956, 1976, 1987, 1997, 2001, 2005, 2010, 2015, 2020
- State-mapped irrigated-parcel footprint — 2020 snapshot, from CDSS Irrigated Lands
- Service-area layer — vintage 2005 — context only (CDSS Div1_Canals package, Div1_Ditch_Service_Area_2005)
- DWR diversion records — pulled 2026-07-27 (provisional and published)
Assembled from Colorado DWR/CDSS public datasets. Informational; accuracy not guaranteed. Not a determination of historical consumptive use and not recommended as a primary source in Colorado Water Court, where quantification requires a licensed engineering analysis.
Each dataset above, and the limits on what it can show, is documented on the methods page. Found something that doesn't match your records? Tell us — corrections ship the same day.
DitchBook is not affiliated with Denio & Taylor Mill Ditch Company. This page is a public-record profile compiled from Colorado Secretary of State and public water-district data.
A mutual ditch or reservoir company is a nonprofit corporation formed under Colorado law — most commonly C.R.S. Title 7, Article 42 — so that landowners who share an irrigation ditch, canal, or reservoir can jointly own and operate it. Instead of the water right belonging to a single person, shares in the company represent each owner's proportional claim, and the company's board and secretary keep the ledger, run assessments for maintenance, and issue certificates the way any small corporation would. Many of these companies have operated continuously since the 1880s, run entirely by volunteer officers who inherit the books from whoever kept them before.
Buying or selling land with shares in Denio & Taylor Mill Ditch Company?
Ditch shares are corporate stock — they don't transfer with the deed, and under C.R.S. § 7-42-104 unpaid assessments follow the shares to the new owner as a lien. The plain-English walkthrough — including what the standard Colorado contract does and doesn't protect — is at Ditch shares at closing on Water Rights Colorado, a guide site from DitchBook's operator. Need an answer about this company for a sale, closing, or estate? Ask here — Nick will get back to you within one business day.
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