Eastern Mojave Vegetation Welch Ditch, Jefferson County, Colorado  
 

Tom Schweich  

Home Page  The Welch Ditch, which first carried water in 1871, was constructed to supply water to Colorado School of Mines when the school was located at the current Lookout Mountain Youth Services Center. It was later extended as far as Smith Reservoir near the intersection of Kipling Park was and West Jewell Avenue.
 

Head Gate.

The plan is to install a suspension bridge from the head gate across to the Peaks to Plains Trail.

Other articles:
• Peaks to Plains Trail:  at suspension bridge;
• Field Notes:   14 Sep 2021;  

Suspension Bridge

Connecting the Peaks to Plains Trail to the Welch Ditch.

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Welch Ditch Bridge

Other articles:
• Field Notes:   14 May 2023;  

Viola canadensis nestled up against the wooden side of the ditch (I guess it's actually a flume at this point.)

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Viola canadensis beside the Welch Ditch.

Other articles:
• Field Notes:   14 May 2023;  

One of several cascades running in mid-May 2023.

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Cascade coming from Windy Saddle.

Other articles:
• Field Notes:  29 Mar 2024;  

The Golden Canal and Reservoir Company

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Commemorative Plaque for resonstruction of the Welch Ditch, 1932.

Other articles:
• Field Notes:  29 Mar 2024;  

Douglas fir above the trail with vine and cones of hops.

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Hops vines and cones on a Douglas fir.

Other articles:
• Field Notes:  29 Mar 2024;  

Junk car along the ditch. Did it crash from Lookout Mountain Road above?

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Junk car along the ditch.

Other articles:
• Field Notes:  Coll. No. 3199, 29 Aug 2023;  

Hops.

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Coll. No. 3199, Humulus neomexicanus on the Welch Ditch.

Other articles:
• Field Notes:  29 Mar 2024;  

Gate

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Gate on the Welch Ditch.

Other articles:
• Peaks to Plains Trail:   at stairs;
• Field Notes:  29 Mar 2024;  

Stairs down to Peaks-to-Plains Trail

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Stairs between Peaks to Plains Trail and the Welch Ditch.

Other articles:
• Field Notes:   23 Sep 2021;  

Rattlesnake in the ditch.

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Rattlesnake in the Welch Ditch.
 

Waste gate.

Other articles:
• Field Notes:  Coll. No. 2311, 3 Jun 2020;  

Jamesia americana on the cliff above the trail.

 

Narrow steep scramble above the trail.

Other articles:
• Field Notes:  20210408;  

Small hornwort on cliff.

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Hornwort on cliff at Welch Ditch

Other articles:
• Climbing Access Trail:   at Welch Ditch;  

Junction: JCOS Climbing Acess Trail

Take this trail to go down to the Peaks to Plains Trail and cross the Grant Terry Bridge.

Other articles:
• Field Notes:  Coll. No. 2315, 3 Jun 2020;  

Unnamed gulch with flume for gulch runoff.

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Where I found Cotoneaster lucidus -- thanks to Cindy.
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Coll. No. 2315, Cotoneaster lucidus

Other articles:
• Field Notes:  Coll. No. 2316, 3 Jun 2020;  

Location of Coll. No. 2316, Hesperis matronalis

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Hesperis matronalis in the ditch.
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What the well-dressed botanist wears while chasing noxious weeds in the grass.
 
Golden s.l. below.

Other articles:
• Field Notes:  Coll. No. 2451, 5 May 2021;  Coll. No. 2452, 5 May 2021;  

Plants of Jefferson County Open Space
Jefferson County, Colorado
Sapindaceae

Acer negundo L.  Box Elder.

Clear Creek, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, on berm of ditch, 2.2 km. west of the GNIS location of Golden. 39.7519°N, 105.2403°W. WGS 1984 Elev. 1777 m. Staminate flowers. Collection location is in both Golden s.l. and Clear Creek Canyon Park of Jefferson County Open Space. Variety interius if infraspecific names are to be applied.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Tom Schweich 2451. 5-May-2021

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Coll. No. 2451, Acer negundo
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Flower of Coll. No. 2452, Acer glabrum
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Emerging leaves and inflorescence of Coll. No. 2452, Acer glabrum
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Coll. No. 2452, Acer glabrum

Other articles:
• Field Notes:  Coll. No. 3546, 25 Mar 2026;  

Prunus americana

Other articles:
• Field Notes:  3 Jun 2020;

Locations: Welch Ditch.  

Jefferson County above …


Concrete lid at scree slope.

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Golden from the Welch Ditch.

City of Golden below …

Other articles:
• Field Notes:  Coll. No. 2318, 3 Jun 2020;  

Holodiscus

Other articles:
• Field Notes:   25 Mar 2026;  

Pinus ponderosa

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Pinus ponderosa along the ditch.

Other articles:
• Field Notes:  20210408;  

Waste Gate

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Waste gate on Welch Ditch.

Other articles:
• Field Notes:  3 Jun 2020;  

Intersection of US 6, CO 58 and CO 93.

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Lots to see in this photo.

Other articles:
• Field Notes:  Coll. No. 3547, 25 Mar 2026;  

Slope above Welch Ditch ay the first gulch out of the canyon.

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Coll. No. 3547, Pinus edulis.
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Coll. No. 3547, Pinus edulis.

Other articles:
• Field Notes:  29 May 2022;  

Dirt access road.

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Evolvulus nuttallianus seen along the Welch Ditch

Other articles:
• Chimney Gulch Trail:   at junction;  

Junction: Chimney Gulch Trail

 

Cross under US Highway 6

 

Cross under Illinois Street

 

Cross under 24th Street

 

Enter Kinney Run Condominiums

Other articles:
• Homestake Drive:   at Welch Ditch;  

Cross extension of Homestake Drive

 


Enter Cottonwood Natural Area

Other articles:
• Golden Checklist Flora:  Cottonwood Open Space;
• Field Notes:   2 Jan 2025;

Locations: Cottonwood Natural Area.  

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View to southeast from Welch Ditch across Cottonwood Natural Area.
 
 

Leave Cottonwood Natural Area


Enter Cottonwood Villas Open Space
 

Leave Cottonwood Villas


Cottonwood Circle
Enter Harmony Village
 

Enter Harmony Village Open Space

 

Leave Harmony Village


Enter Fossil Trace Golf Course
 

Turn northeast

 

Turn southeast

 

Turn northwest

 

Cross under S. Golden Rd

 

Leave Golden city limits

 

Cross under I-70

 

Smith Reservoir

If you have a question or a comment you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.  


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Date and time this article was prepared: 8/1/2026 2:59:34 PM