Rosen Lake Ratepayers Association :: Rosen Lake :: Environmental Issues

If your lakefront property on Rosen Lake has a lawn, please consider using no-phosphorus lawn fertilizer this summer.  Phosphorus is the middle number on the fertilizer bag - i.e. 22-0-15 fertilizer has no phosphorous while 22-9-12 does!

Click here to learn more about lake friendly lawn fertilizer.



The East Kootenay Integrated Land Management Partnership (EKILMP) was formed in early 2006 in response to concerns about the fast pace of shoreline development in the East Kootenay region.  The aim is to protect lakes by producing ecologically based land use and development guidance documents and encouraging more integrated and coordinated approaches by all levels of government, property owners and developers.   EKILMP has contracted the development of a series of reports based on the Sensitive Habitat Inventory and Mapping protocols that are being developed in BC for lakes in the East Kootenay region.  Three reports are generally completed for each lake: 

Foreshore Inventory and Mapping used to identify and document the land uses (i.e. residential development), shoreline modifications (i.e. docks), and biophysical attributes (i.e. marshes) along the lake shoreline.  The report identifies baseline inventory information that can assist with monitoring, the development of land management objectives for the shoreline and the development of management plans and policies.

The Fish and Wildlife Habitat Assessment reports include historical air photo analysis, fisheries, aquatic invertebrates and wildlife field assessments, aquatic habitat indexing and determination of zones of sensitivity for the lake foreshore.  The result of the report is the identification of Ecological Value rankings and recommendations of future actions to be undertaken to provide direction for opportunities for conservation and restoration.

The Shoreline Management Guidelines are intended to be used as an initial step when reviewing, planning for, or prescribing alterations along the shoreline.  The Guidelines are developed based on the information contained within the two above-noted assessment reports for each lake.  The Guidelines identify shoreline color zones, activity risk analysis and the process of proceeding with applications for works along the shoreline. The Guidelines are intended to result in cooperative management between all levels of government who have responsibility for approvals and permits and to provide direction to applicants when considering development along the foreshore.

Click here to read the Rosen Lake Shoreline Management Guidelines



Water Quality Report: July 18th, 2010, there were seven water samples sent to the labs in Calgary: three for coliforms, two for phosphates, and two for mineral analysis.

Mineral Analysis:  Everything tested in this category were well within acceptable limits.
The acceptable limit is 10mg/L for nitrites.  Our reading in both the inflow and the mid-lake samples were at 0.02mg/L.
Phosphates:  The highest allowable limit for a healthy lake is .05mg/L.  Our readings this year, in both samples, were 0.03mg/L.  There readings are the same as last year.


Total Coliforms in CFU/100ml          (Acceptable limit for potable water is 10CFU/100ml)
  2010 2009 2008
Inflow: 31 21 9
Outflow: 1 10 6
North End: 16 5 3

Fecal Coliforms in CFU/100ml           (Acceptable limit for potable water is <1CFU/100ml)
  2010 2009 2008
Inflow: 2 3 1
Outflow: 1 1 <1
North End: <1 1 <1

There is a variety of government published material on water quality. Click here to read more about The BC Lake Stewardship and Monitoring Program

For more information, contact Rosen Lake Ratepayers Association
Box 186
Jaffray, BC V0B 1T0
Attn: Irene Talarico, Water Quality



On Tuesday, July 20, 2010  there was a presentation at the Jaffray Community Hall by the East Kootenay Integrated Lake Management Partnership Committee (“EKILMP”) regarding Tie Lake and Rosen Lake. The purpose of the meeting was to present a draft of a Lake Foreshore Management Plan for Rosen and Tie Lakes, including:

  • Water zoning models;
  • Lake management policies;
  • Best management practices; and
  • Development guidelines
  • and to collect public input on the draft Plan

There were approximately 50 people in attendance and a lively discussion followed the presentation.  Most of the EKILMP members in attendance were scientists.  Many good suggestions were made at the meeting and the EKILMP group determined to wait for additional community input to be submitted before finalizing the Plan.  For example, the Rosen Lake foreshore is heavily developed – only 2% of the foreshore is not developed.  Only Loon Island was identified in the study as being available for wildlife.  Many Rosen Lake residents pointed out those other areas, such as Turtle Cove, should be added to these “wildlife critical” areas.  The characterization of an area as wildlife critical may impact development guidelines for that land.

Those residents at the meeting generally expressed satisfaction that our lake was included in this important (and expensive) study. We all share a commitment to preserving the habitat of our birds and wildlife and the Plan may be an important first step to preserving our lake’s environment.

The EKILMP published their final copy of the Rosen Lake Shoreline Management Guidelines on November 25, 2010.  Copies of the finalized plans will be posted on the Regional Districts Website, given below.  Anyone wishing to see a full printout of the plan, can take out a copy from the Jaffray Community Library.  It is open every Monday evening, except on holidays, from 6:30 to 8:00pm.  No fees for library use.

Click here to view the main EKILMP website for more information

Click here to view the Foreshore Inventory and Mapping (FIM) report

Click here to view the Shoreline Management Guidelines report



The Rosen Lake Dam Committee was established to:

  • Monitor and maintain the level in Rosen Lake.
  • Educate people regarding safety issues and damage to the dam, caused by people being on the dam. Signage has been posted asking people to stay off the dam.
  • Monitor the dam for needed repairs and report them to the RDEK.
  • Keep the dam area free from debris.  Please check that your wharfs and docks are secure and loose parts will not end up in the dam.

The RDEK has committed to making weekly checks of the dam, starting in August of 2010.

A note of interest:  You can see  Kokanee, decked out in their distinctive red spawn colour, at the outfall of the dam, generally late August and September.

For more information, contact Rosen Lake Ratepayers Association
Box 186
Jaffray, BC V0B 1T0
Attn: Lanny Kniert, Dam Committee



It is challenging to determine which level of government is responsible for an issue on or about Rosen Lake.  Generally, the federal government has responsibility for creating laws that govern activities on the water, for example, boating licenses.

The provincial government has responsibility for provincially owned lands that are on or around Rosen Lake.    We understand that for concerns regarding provincially owned lands above the high water mark, you may contact:

Ministry of Transportation
129 - 10th Avenue S.
Cranbrook, BC V1C 2N1
(250) 426-1500

EMAIL: Arthur McClean, A/District Manager
EMAIL: Gordon Chudleigh, District Operations Manager
(250) 837-9407

For concerns about provincially owned lands on or below the high water mark (ie illegal docks), you may contact the BC Integrated Land Management Bureau.  If you wish to file a complaint with the ILMB, please use this form.  The enforcement officer will generally not respond to a compliant unless you have first submitted the Integrated Land Management Bureau (ILMB) complaint form. Click here to view the ILMB complaint form

Cranbrook ILMB Office
1902 Theatre Rd
Cranbrook BC V1C 7G1
Tel: 250 426-1766
Fax: 250 426-1767

However, the maintenance of the two public access locations on the lake (toilets, parking and picnic facilities) has been contracted to the RDEK. For information, please contact: Jim Penson or Kevin Paterson, at the RDEK office.   Phone 250-489-2791



For further reading, we recommend “On the Living Edge – Your handbook for Waterfront Living”.  This website and book contains valuable information about septic systems, shoreline landscaping, shoreline erosion, and healthy lake side living.  Check out  

The easiest and most important step YOU can take to protect our lake is to use ONLY phosphate free soaps and detergents!!

Yard Maintenance, Landscaping and Gardening

  • Minimize the disturbance of shoreline areas by maintaining natural vegetation cover.
  • Minimize high-maintenance grassed areas.
  • Replant lakeside grassed areas with native vegetation. Do not import fine fill.
  • Use paving stones instead of pavement.
  • Stop or limit the use of fertilizers and pesticides.
  • Do not use fertilizers on your grass!
  • Hand pull weeds rather than using herbicides.
  • Use natural insecticides such as diatomaceous earth.
  • Prune infested vegetation and use natural predators to keep pests in check. Pesticides can kill beneficial and desirable insects, such as ladybugs, as well as pests.
  • Compost yard and kitchen waste and use it to boost your
    garden’s health as an alternative to chemical fertilizers.


  • Do not throw trash overboard or use lakes or other water bodies as toilets.
  • Use biodegradable, phosphate-free cleaners instead of harmful chemicals
  • Conduct major maintenance chores on land.
  • Keep motors well maintained and tuned to prevent fuel and lubricant leaks.
  • Use absorbent bilge pads for minor leaks or spills.
  • Recycle used lubricating oil and left over paints.
  • Check for and remove all aquatic plant fragments from boats and trailers before entering or leaving a lake.
  • Do not use metal drums in dock construction. They rust, sink and become unwanted debris. Use blue or pink closed-cell extruded polystyrene billets or washed plastic barrel floats. All floats should be labelled with the owner’s name, phone number and confirmation that barrels have been properly maintained.

Ministry of Environment
#401-333 Victoria Street
Nelson, BC V1L 4K3
Phone: (250) 354-6355
Fax: (250) 354-6332

The BC Lake Stewardship Society
#203 - 1889 Springfield Rd.
Kelowna, BC V1Y 5V5
Phone: (250) 717-1212
Toll free: 1-877-BC-LAKES
Fax: (250) 717-1226






Fire Bans
View fire bans and area restrictions for the B.C. southeast region.

Big Fish Stories
Submit your ‘Big Fish’ story and have it published on the website. Get more details.

Find a Golf Course
Contact one of the many golf courses around Rosen Lake to book a tee time.




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