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Two Mile Creek Information

TwoMile Creek 
Stats 
Description
Neighborhoods
Schools
Flood Data
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Watershed Address: 
Twomile Creek, Goose Creek, Boulder Creek, St. Vrain, South Platte, Platte, Missouri, Mississippi, Gulf of Mexico 

Approximate length: Four Miles   

Description: 
With its headwaters up what is now the Pine Brook Hills subdivision, Two Mile Creek-- like many small drainages-- is perennial, generally dry through most of its length from July to March.  Between Broadway and Edgewood Twomile Creek is hidden from view in underground culverts, but where it emerges, just above the confluence with Goose Creek-- west of Folsom and south of Edgewood-- wild watercress is found. 

The 1995 FEMA Flood Insurance Report notes that: 
Twomile Creek has frequently overtopped its banks with silt-laden floodwater.  The worst flod on Twomile Creek occured in September 1933... On August 19, 1965, the Boulder Daily Camera headline read: "Twomile Canyon Gully Washer Spews Mud Across Broadway and Into Yards."  The article stated that "Water cascading down normally-dry Twomile Creek spewed mud across sections of Broadway and silted yards and basements of 8 or 10 homes near Broadway and Iris Avenue Wednesday afternoon." (p. 14) 

Also see 1909 (when two people were killed in Two Mile Creek), 1941, 1955 and 1969 from History of Flash Floods in BASIN History.

Nearby Neighborhoods (upstream to downstream) 

  • Pine Brook Hills
  • North Boulder (near Linden & Iris)
Schools
  • Foothills Elementary
  • Columbine Elementary
Flash Flood Data  
Source: FEMA (Federal Emergency Management Association)  June 2, 1995 Flood Insurance Study 
 
Flooding Source & Location 
Drainage Area (Square Miles) 
         Peak 
Discharge  
 
    (CubicFt. 
per Sec.) 
10-year 
50-year
100-year 
500-year 
 Confluence w/ Goose Creek 
2.9 
360 
840 
1,120 
2,000 
 Broadway 
1.68 
210 
 675
890
1,800
 Upstream Limit of Study 
1.40 
210 
 540
710 
1,430 

BEYOND BASIN:

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Last Page Update - Tuesday December 27, 2005